also what kind of rest are you using I have had a rest move on me too but most likely like others said it sounds like a nock issue
before you move too much stuff around & really get it out of wack I agree bring it to a pro shop
This is why I shoot all year long
2017 Bow String Depot Prostaff http://www.bowstringdepot.com/
Remember when posting what may seem innocent to you may not to others, text shows NO emotions so please,,, don't take it personal & automatically go on the defense. Take it w/ a grain of salt, take it as a joke or just let it go.