Anyone have a better idea on how to keep the knobs on the Zuca cart from falling off? I have replaced the whole assembly twice and still does the same thing. I tighten them as much as I can and even the set screw, yet I still have the issue with them falling out during a round. Worst part is not even noticing it until your too into the round. Thinking about welding in somehow but with the plastic spacer probably not a good idea.