Quoted from Billc479:I've never had that issue. Is the set screw digging into the rod? Take the set screw out and inspect the bottom - does it look worn? Are you putting the set screw into the same place on the rod? - If so, try setting the screw 90 degrees from where you have been. Is the set screw backing out? if so, a bit of loctite would work.
thanks for the help. It seems like the screw holding the right side of the bracket wasn't biting in the wood so every time I hit the spinner, the bracket was moving a bit. We put a toothpick in the hole, glued it and used a slightly larger screw. My buddy also bent the switch where it holds the arm and it's been playing great and sitting properly after some bad hits.