Here is what I would do:
Before swapping out the string and cables, record everything in case you wish to switch back or undo something:
1)check to see that the cams are in time and correct if necessary.
2)shoot the crossbow through a chronograph and record the arrow speed.
3)in the uncocked position, measure the axle to axle.
4)mark the cams where the cables cross when the crossbow is in the uncocked position.
a)Swap out the bow string and add 1/2 or full twists as required to match your original axle to axle measurement.
b)Swap out one cable and add 1/2 or full twists to bring the cam to the mark you made on it.
c)Swap out the other cable and add 1/2 or full twists to bring the cam to the mark you made on it.
With the crossbow in the uncocked position, block it level.
Put a level on the rail-stock and 90 degrees to the rail-stock.
Put a level on each cam, 90 degrees to the rail-stock.
If a cam tilts upward, add 1/2 or full twists to the upper "Y" section.
If the cam tilts downward, add 1/2 or full twists to the lower "Y" section.
At any time when either adding 1/2 or full twists to the single loop end of the cable and the "Y" section starts to wrap up, just remove a "Y" section and with out adding twists, bring it back around its partner to take out the wrap up.
Recheck your cam timing.
All these adjustments and close checking can be done while the riser is in the press. Just back the press off enough but still enough pressure so the bow does not fall out. Depending what bow press is being used the riser may not have to come off. The bow press I have, I am able to stand my bow vertical with the stock end up.
Once completed, then re shoot the same arrow-point combination through the chronograph to see if there were any speed changes.
Advancing cams to either match the advertised speed taking into consideration if an over weight arrow was used, adjust by adding equal 1/2 or full twists to the single loop end of the cable.
Advancing the cams to increase speed will lessen the axle to axle measurement.
Removing twists from the bowstring will gain axle to axle measurement but will back the cams off reducing speed.
Personally, I do not maintain the axle to axle measurement as that is just a guide line in the manual. My crossbows are upgraded and modified to shoot well over the manufactures advertised speed taking into consideration if an over weight arrow-point combination is used.
With the crossbow in the uncocked position, look from one cam to the other along the bow string. One is checking to see if the bow string humps up as it crosses the rail-stock. If it does this is where the shims are placed in the upper area where the riser meets the rail-stock. This illiminates the hump caused by extreme downward bow string pressure and greatly reduces serving wear in the arrow-latch area.
Wishing you all the best.
Before swapping out the string and cables, record everything in case you wish to switch back or undo something:
1)check to see that the cams are in time and correct if necessary.
2)shoot the crossbow through a chronograph and record the arrow speed.
3)in the uncocked position, measure the axle to axle.
4)mark the cams where the cables cross when the crossbow is in the uncocked position.
a)Swap out the bow string and add 1/2 or full twists as required to match your original axle to axle measurement.
b)Swap out one cable and add 1/2 or full twists to bring the cam to the mark you made on it.
c)Swap out the other cable and add 1/2 or full twists to bring the cam to the mark you made on it.
With the crossbow in the uncocked position, block it level.
Put a level on the rail-stock and 90 degrees to the rail-stock.
Put a level on each cam, 90 degrees to the rail-stock.
If a cam tilts upward, add 1/2 or full twists to the upper "Y" section.
If the cam tilts downward, add 1/2 or full twists to the lower "Y" section.
At any time when either adding 1/2 or full twists to the single loop end of the cable and the "Y" section starts to wrap up, just remove a "Y" section and with out adding twists, bring it back around its partner to take out the wrap up.
Recheck your cam timing.
All these adjustments and close checking can be done while the riser is in the press. Just back the press off enough but still enough pressure so the bow does not fall out. Depending what bow press is being used the riser may not have to come off. The bow press I have, I am able to stand my bow vertical with the stock end up.
Once completed, then re shoot the same arrow-point combination through the chronograph to see if there were any speed changes.
Advancing cams to either match the advertised speed taking into consideration if an over weight arrow was used, adjust by adding equal 1/2 or full twists to the single loop end of the cable.
Advancing the cams to increase speed will lessen the axle to axle measurement.
Removing twists from the bowstring will gain axle to axle measurement but will back the cams off reducing speed.
Personally, I do not maintain the axle to axle measurement as that is just a guide line in the manual. My crossbows are upgraded and modified to shoot well over the manufactures advertised speed taking into consideration if an over weight arrow-point combination is used.
With the crossbow in the uncocked position, look from one cam to the other along the bow string. One is checking to see if the bow string humps up as it crosses the rail-stock. If it does this is where the shims are placed in the upper area where the riser meets the rail-stock. This illiminates the hump caused by extreme downward bow string pressure and greatly reduces serving wear in the arrow-latch area.
Wishing you all the best.