Thats easy fixed.
I use Magnocks they only come in 2 sizes large and small
The best thing is you get exactly the same release off the string every time no matter what.
If you want to check them out go to
www.magnock.com and have a look.
At first I thought they was just another gimmick to get my money but after some research I decided to give them a go and believe it or not they do perform exactly as advertised.
I now have them on both my hunting and target bow.
Give them a try and be pleasantly surprised