I just purchased a new Switchback XT. I took it to the archery range this morning and found that my bow has a rather annoying TWANG after each shot. Also, the rubber stoppers above and below the cams are quite warn after only 300 shots. Here is my set-up:

Mathews Switchback XT - 29 in. draw, 58 lbs.
Gold Tip Pro Hunter 5575 - 100 gr. tips

Any suggestions? I have not been to my archery shop yet. I am planning on going Wednesday. Thanks.