Here's what you do tonight.
1. If your shooting carbons do like David said and check them, espically if your shooting a single dot target, I can tear them up in one day shooting at a single dot target. Bend and twist them looking forsplits and bumps and listen for a cracking noise. Check the nocks on them and then take a marker and number the good ones when your done so you can see where what numbers are hitting.
2. Get a good relaxed grip on your handle,draw the bow back and make sure you like it and have someone draw a stright line down the back of your riser onto the back of your hand so you can pratice getting you hand in the bow the same way every time.
3. Without your bow take your release and find a good comfortable anchor on your jaw line, now draw your bow backclose your eyes and set your jaws or teeth togeather,and get that same comfortable anchor. Is it to short, to long, peep to high? If any of it is wrong, fix it.

If you do all these things the same way every time, squeeze off a good clean release with propper back tension and follow through, you should know where your arrow is going to hit right after it clears the bow.

3'' sounds right for a 5 yard drop but I'm sure one of the other guys would run your numbers through On Target for you.