[PapaDaze]

Do you level the cams when the bow is uncocked or cocked?

My bow showed an unlevel cam on one side when cocked only. Only make adjustments when uncocked of course and bow must be partially pressed safely to do so. Many posts on how to do this correctly. I got mine right on 2nd try (lucky).

 

[KX500]

Added shims to my XP400 yesterday. I didn't even realize how much down pressure was on the string before the shims, but there must have been an 1/8" deflection between the level of string and the top of the barrel. I would think having the string riding that low would be dangerously close to having it go under the arrow and a dry fire. I would think making the string move to a place it doesn't want to be ('up') for every shot wouldn't be all that great.

Anyway, I think it took almost as long to find my tin snips as it did to to the actual mod. My scrap putty knife was 0.090" thick. Being plastic, if was very easy to work with and I imagine the shims are just a bit 'crushed' when tightened down - they don't seem like they will slide out of place. Thickness seemed about right.

 

[TomOnTheRun]

Added shims to my XP400 yesterday. I didn't even realize how much down pressure was on the string before the shims, but there must have been an 1/8" deflection between the level of string and the top of the barrel. I would think having the string riding that low would be dangerously close to having it go under the arrow and a dry fire. I would think making the string move to a place it doesn't want to be ('up') for every shot wouldn't be all that great.

Anyway, I think it took almost as long to find my tin snips as it did to to the actual mod. My scrap putty knife was 0.090" thick. Being plastic, if was very easy to work with and I imagine the shims are just a bit 'crushed' when tightened down - they don't seem like they will slide out of place. Thickness seemed about right.

Well played and good luck. This should extend serving life. Also, Marty has my string specs for the XP400. His string work is best I've seen. When that day comes he's worth a go. Trust me, you will not be disappointed.