The rubber scrapes/sweeps fit so tight against the window glass and glass frame raising or lowering the glass is near impossible. The rubber is seated in the door panel and door channels correctly. It is a real hassle to install them and a real bummer when after all that struggle, to discover the effort was in vain! Had I thought to search here in the Stovebolt beforehand I might have avoided this problem. There was a long thread discussion in 2015 in the Stovebolt about problems the Advanced Design Truck guys were having with product differences. Apparently, the vendors offer different width rubber products. I have heard from two other ‘46 truck owners that used Jim Carter’s sweeps with success. I have ordered some from them and will give them a try.