Thanks Scott.. definitely will give this a go. Just didn’t want to force it and potentially rip up some of the felt lining which still looks like it’s in good condition.
I'm going to try the windex thing too. But I already ripped out some of the felt as it was just a grow medium for the moss.
My new slip in Stockton is covered, so this should not happen again -
Same problem… I found a spray product at Ace sold as a window lube for RVs. It helped a lot.
If you could, what was this product?
And what drains are there for the window channels that we need to be sure that they drain. I don't know of any drains for the window channels or where they are, and how to know if they are unobstructed.