The right rear window motor struggles to try to get the window up or down (ends up needing assistance from me) I tried replacing both the window motor and the regulator, and found that this is not the problem. I did notice that the window/weather stripping isn't sitting the way it's supposed to because it's worn, and this is causing a lot of drag. I think this is the problem. What do you think? And how much and/or how hard is it 2 replace? Can I replace the stripping without taking the door panel off again?