My plates are slipping inside my very well used DB2. I went to do a drop time test and when the camera came back up it was tilted down. So the plate slipped forward. I put some gaff on the smart side of the plate where it locks down against the clamp, which seems to be the only point of contact with plate on that side. That helped but last night even that had just a tiny bit of slippage during a prolonged take of tilting straight down.
The clamp with the 5/32 screw seems to be bound up. Whereas I used to be able to push it back and forth when loose now it doesn't move. At this point it is still very functional. And its a bit annoying having to deal with the worst case scenario, in my mind, as I try do what it do.
Hope this makes sense.