SWIABOONER,
It's your string. I had the same thing happen. Your string stretched, lengthening your ATA and shortening your BH. In doing so, the string makes more contact with the suppressors. Is you bow getting loader too?
If you call Mathews, they will tell you to press your bow and put 8 twists in each end of the string and each end of the cable. Doing that is supposed to bring the bow back into spec. It didn't come close to fixing mine. I replaced the Zebra string set with Winner's Choice and fixed the problem for good. Look in this section for my "Mathews Outback Owners" post. It will explain it all. DLO