> Has anyone found an alternative to replacing the nylon gliders that fit in
> the bracket on the lifting mechanism for a Westy skylight?

A couple of weeks ago I took care of this permanently by drilling a small
hole through the rivet that the little plastic rollers go around.  I then
placed a small bolt through the hole, with a nut on one end and a washer on
the other end that replaced the nylon roller.  The core of the original
nylon roller was left in place, but the edges were broken off and the washer
is now used to hold it in place in the channel guide.  If you try this, use
the smallest bolt that you can find since a long one would catch on the
bolts used to hold the vent on when you raise it.  I did not remove the flex
arm assembly when I drilled the holes, but believe me when I say that it
would be a lot easier to do if you did.

Another option would be to replace the flex arm assembly.  Bus Depot
(www.busdepot.com) has them for under $30.  However, you'll probably get the
same nylon rollers that will probably eventually break also.  That's why I
decided to go with the bolt and washer setup that I described.  It won't
break, and it appears to be much sturdier than the original setup and it
seems like it would even stand up to repeated driving with the popup vent
open, something not recommended for the original setup due to the fact that
doing this will probably break the rollers if they already aren't.

Hope this helps,

Steve