I know this has been gone over but the hot summer sun makes it worth reminding.. Don't forget to treat the outside rubber window seals to protect them from the baking summer sun.. I prefer Adams super VIT cream treatment but as long as you apply some treatment for ultra violet rays protection then you have done your part in keeping your seals looking nice shiney and black while protecting them from the harmful sun.. Don't believe they need it? Take a laser thermometer and point it to the seals while out in the sun.. you will be amazed at the temps.. I wont think of letting my 89 model coach sit in the baking sun without the protection.. My old coach has the original seals in it and they are still plyable.. shiney and black.. Ask anyone who has replaced a window seal and they will tell you it is effort well spent.
Good advice for these older rigs, and probably all of them Thank you ---- Fritz
Great advice. If all else fails you can find replacement rubber here:
Window Gaskets (http://www.vintagetrailersupply.com/category-s/26.htm)
I had lots of help from Hans, Tony and Alan during the Un-Rally and we were able to figure out how to do it.