Looking for advice/opinions on what YOU use to restore dried and cracked window gasket rubber. In 2001, I bought rear window gaskets from Steele for my panel truck and while taping them for a repaint (yes, I took all that advice and am keeping the truck) I noticed that they had started to crack in the corner bends. I sure would like to try to restore the rubber but there are so many products on the shelves I'm not sure where to spend my $. Suggestions as to something that works?