What kind of tools do you have?
centershot tool?
nock height tool?

Did you take any measurements when you first got the bow? Was the bow new? String new?
Do you have access to a bow press? If the string stretched , you can put it in a bow press to relax the limbs and twist the string to return it to the proper position.
It depends on where your arrow is sitting on the shelf wether or not I would move the rest or the nock (if it is a tuning issue). I'm guessing you probably do have string stretch which means you need to put a few twists in the string to return it to the proper place.
Did you take tiller measurements when you first got it?

If someone is subscribed to a thread , does that mean their name stays on top , which makes it appear that their currently viewing the post?[&:]I see arroman is still listed on top.

no sir dont have any of them tools you are talking about, and i dont know what a tiller is on a bow. the bow is used and was set up before i got it. however i did change the rest on it. this will be my second year hunting with it. shot it today and was drilling them in there about inch and a half group of three arrows at 25 yards and a pie plate at 45 yards, using a single sight pin atm.