Not sure I am calling the problem properly, but on my Firepower when the ball makes contact with the sling, the sling occassionally vibrates back & forth very rapidly as it launches the ball. It doesn't do it every time, but does occur (on both left & right slings) often enough. This wasn't happening before I just upgraded the CPU to a Rottendog. Anyone experience this & know what the solution is? Thanks.

thanks Freeplay40 - thought it was something along those lines....will check it out & regap.

Thanks, made the adjustment & the machine-gunning has stopped. Appreciate the advice.