my side back windows on my 65 suburban are very hard to open, the channel is about 10 years old and has not started to rot yet but they are real dry and won't open more than a few inches. what can i use to lube the filler strip(can't remember what the cloth strips are called)that won't cause them to rot. they were full of pine needles from being parked for 5 years under some trees, i cleaned them out, but still the windows are way stiff in opening.
