I've still got 2 voyagers with excessive J-52
& J-88s. Both copiers are on cabinets, not paper decks.
I have the shim on the job separators and have shims between the copier and cabinet. Has anyone found anything new to try?.

When does it happen? Internal output, finisher output?

I had fabed the output feeder shim and had laid 2 pieces of mylar , one on top of the other to create it. I removed one piece of mylar on both machines last week and the J-52s have seemed to stop. But the J-88s are in the finisher and never happen when I'm in front of the copiers.