i checked the cable, it is not that. ...... i am shooting a 4" vane- so they are not as tall as the blazers

when it does happen i can easily tell as the arrow wobbles crazy...i checked the rest and it had a marking on the black portions leading up to the fork..also it started to lift up the phelt that comes to keep the arrow quiet...

could my bow be that fast?? i know i am not shooting that quick and had thought that it was only defective on bows shooting in the 300 fps??