I recently bought a Darton Maveric bow that shot pretty good. But it was illeagle to hunt with here in ID. It had an 80% let off, & 65% is the max here. Any I had the module changed to 65%, & ever since I have had erratic arrow flight. Out of 6 arrows I would have 2, or 3, or 4 that would hit fne, but the others would be as much as 18" high & either right or left 3-4". I would seperate the accurate arrows from the others, but this time different arrows would be off. Would changing the let-off percent change my arrow flight?

Changing to 65% should have no affect on your tune unless you were on the edge of the arrows spine. The 65% module will boost your power slightly and may have put you off the arrow's capability (out of the arrow's spine limits).

The other possibility is the installation of the module was not done correctly. This would be just about as rare as what I stated above; but, it's possible. Sorry you're not closer so that I could help you personally.

Did you check to make sure you replaced the 'E' module with a 'S' module and that you put the screws back into the same draw length holes?

I had the module installed by a Darton dealer, so I,m assuming it was done correctly. Any way I think I figured out wat was going on. I had a riend shoot the bow, & on drawing the arrow was pulled off the rest. We put the arrow back but it was not touching the rest at all. We took the old string loop off, & some serving that was on the string & replaced a new loop. It seems to be shooting pretty good now. But thanks for the opinion any way.