Just got a new Ross cardiac and while sighting in yesterday the rubber stopper on the end of the string stop flew off a couple of times. Anyone know of a good fix for this? i thought about glue but wanted some opinions first. Also, when shooting I heard a twang. Pretty noisy. Sounded like a screw loose so i went through and made sure they were all tight. Anyone have any other ideas on what to do? I still need to tie in some cat whiskers but i don't think that's going to eliminate the problem. Maybe a second set of limb savers or something? thanks for the help.