Here are a couple of pictures of how the materials are applied. Hopefully these will explain the exact step-by-steps on how and where to apply your silencing materials.
This is not required on a TAC15
Crossbow due to the fact that a regular TAC15 does not have the frame pin above the trigger assembly, so it does not have the same noise problem.
I also place a very small piece of just the rubberized material on the cable release pad that the hammer strikes to release the crossbows string.
If you are not certain which component I' talking about, please let me know and I'll post a picture of this for you?