I'm prepping to build my doors and am curious as to which style of window channel to use. There are two types, rubber bumpers to guide glass on doors and window molding molding or felted catswiskers,? Which is preferred? My car is set up for bumpers but I'm thinking catswiskers are better as it offers more area support. Thanks Leon
Wiskers. Sometimes you can see down inside the body if you only have rubber bumpers. Keeps other things from falling down as well.