Putting old rubber weatherstripping in a freshly painted truck is like putting an elevator in an outhouse-it just don't fit. Yes that's a Roadhouse reference. The new rubbers were nice and supple and will look much better next to the fresh paint. The best way we found to install the rubber is to place it on the cab first, then set the glass in. Then get something you can use to push the lock strip in. We used a thick plastic stick.