I'm waiting for info from Jayco but will not be disappointed if I don't hear anything for a while due to the holidays. In the meantime, I'm still trying to figure things out on my own.
I located the following info that seems to indicate an off-center room may be normal for a Jayco 285. See the part about using a prybar or screwdriver to insert a gasket. Does this sound reasonable or realistic? Does a new gasket have enough grip to stay in place and not be rolled out of a low clearance location?
AllExperts RV Repair/Gasket seal on slideout
Expert: Shawn - 5/1/2006
I own a 1999 Jayco 285 with a double slideout. The seal on the slideout needs to be replaced. Is this something that I could do myself or should I leave it for the RV dealer? It looks to me that I should be able to do this at home. Am I fooling myself?
Rick it is easy to do yourself, get a new bulb seal from a dealer and it should take you about an hour. Just start at the bottom and pull it off all the way around the slide. You will see the steel clips that hold it to the slide flange have all rusted. Lay out the new seal up and over slide, start tucking the slide seal over the slide flange at the bottom just push it in the groove. Now sometimes the slde room itself and the slide flange are very tight so a prybar or big flat head screwdriver will help to tuck the seal in where your fingers don't fit. Now continue this all the way up till you reach the corner and use a utility knife to cut a slit in the wiper part of the seal to allow it to go around the corner. Continue this till you go all the way around the slide then cut off the excess. A bead of caulking or silicone all the way around the seal where it meets the flange to stop water from entering will extend the life of the seal