Dan, I had this problem early on in my 235, right from the first time I
cycled the gear on jacks.

After a lot of head-scratching by all the local gurus about what to do with
the hydro system, I finally decided to try the KISS method. I obtained a
small sheet of 1/4" thick High density polyethylene (pretty sure it was
HDPE, anyway, but other types would certainly work, e.g., Teflon, etc.) and,
after figuring out where things rubbed, attached the plastic to the inside
of the door as a rub plate. The edges are beveled in order not to create
anything for the gear to snag on.

Quarter inch thick is overkill since the stuff just doesn't wear but it
allowed for counterboring for the attaching hardware so they wouldn't become
new rub points.

The HDPE is slippery as snot on a doorknob and if the gear is still hitting
it, I can't tell.

Don't remember where I got the stuff but should be available from a plastics
supplier.

One person's solution. Hope it helps.

Dan Schaefer