Here is a set from ten Point that one may be able to slightly modify to fir in the cable groove of the crossbow.
This system is adjustable which one requires when tuning a crossbow. The picture shows the unit assembled.
One dies nit get the extra rods with the rubbers as that is for demo purposes only. The threaded rod has a flat
side where the small Allen screw is tightened against. This prevents damage to the threaded rod.
A better string stop rubber design has two vertical holes which act like a shock absorber. Center Point crossbows
which are manufactured over seas (Heat 415, Patriot 415 and Sniper XT 390) come with these. One can purchase
these rubbers from Center Point Archery in the U.S. These rubbers are a much higher quality than the Ten Point ones.
Most of the string stops are a waste of money for the reasons: 1)most are non adjustable, 2)setting to lightly touching
the bowstring in the uncocked position, when shooting the crossbow is like running into a wall. 3)Setting a small gap
between the bowstring and the string stops, after the shot, the bowstring makes contact for a few vibrations, then
nothing so they are useless.
Where one hears the major sound is the shooter and not farther away.
Wishing you all the best with what ever you choose.
Take care.