Slow down .........wow !! [8D]

The harshness and speed is probably because it's 75# ........it's going to pull a lot harder than a 70# or less obviously !! The roller guard bows tend to pull over !!

If the string suppressors are worn out already, has added vibration, and his draw length is too long..........his bow is obviously out of spec..........he needs to check his ata,bh, and cam timing !! Spec's are much more critical on a string suppressor equipped bows........than a single cam without them !

It's a freakin' bow........Bowtech has had their share of little issues too.......seems like you have had a couple in the past BM !! Your buddy's get their bows back in spec. and the string settles.........they'll be good to go .....unless they got a Lemon and that happens with all companies(Mathews will fix it if that's the case) !!