Put a set of string leaches on they are made by sims vibratory labs the people that make limb savers.Last year I was shooting my bow on video a couple of days later I put a set of string leaches on.When I played the video back you could here the twang very clear.Then with the sting leaches installed the twang was totaly gone the only sound was a soft thump.This should take care of your problem you'll be amazed at how quiet you're bow will be like I was.