I think you're right Rob, a combination of points, being more force behind the arrow and a steadier hold and aim, my pins don't dance that much around the target...
I had an easter shoot out today: 3 rounds, first round was shooting 60 or above with as less arrows as possible, I needed 11 (5 x 10's and 2 x 9's )
second round was shooting 10 arrows at small chocolate easter eggs and plastic bunnies, I nailed 10 of thesmallest ones.
third round was popping balloons on a swing, 15 arrows killed 14 balloons.
So I guess, my form has improved, not my shooting mind.
I never thought of fiddling with poundage or let-off until today, I even think going a little less on let-off would improve my shooting even more.
But I'm off to the Amazon Jungles to do some hiking, so my bow will have 14 days off.

F.