back in august i switched from a whisker bizcut to a quicktune 360. initially if worked great but the teflon guides wore out . i contacted NAP and they said they have a new post style for it and that you need to set a credit card thickness between the prongs. they offered me a quicktune 4000 if i didnt like the new style 360. i havent tried it yet because i threw the biscut back on for hunting season. i would call them up and see if they will do a swap. i paid 50$ for my 360 rest and if it works i will keep it if not im gonna hold them to the agreement.