Here's what I posted to Norbert in the other thread:
For the lowly 2200, MIS (www.inksupply.com
) sells a set of little gizmos to insert into the printer that hold the pizza wheels up so they don't contact the paper surface. I installed them because I was always getting track marks on glossy paper, and the pizza wheels seem to be completely unnecessary.
I use Epson double-sided paper from time to time and have never noticed the track marks. So you might look to see if there is a way to wedge something against the shaft that the wheels ride on to hold them out of the way. I don't have either a 4000 or a 4800, so I don't know if the same trick will work on them.