sounds like your clamp is on the high side of tolerance and won't tighten enough. Mine has a metal collet for the screw. Check if it is spinning free when you get new screws in.
Go to hardware store with screw and get some longer ones so you can add a locknut to it.
But a strip of electrical tape will thicken the rod, and wont hurt anything.
Go to hardware store with screw and get some longer ones so you can add a locknut to it.
But a strip of electrical tape will thicken the rod, and wont hurt anything.