candidate for a window relay ???

[kglowacky]

Just finished installing my windows. New regulators. new motor. pass Window goes up and down good with the used rubber installed. Installed used rubber on drivers side and about 3/4 of the way up it struggles and stops short by 1/2 inch.( I can push it with the motor help and it will go up. Is there any adjustment ibn the way it rolls up in the channels? Will a relay help me? Thinking rubber is the issue and going to reinstall. Without rubber window goes up and down perfectly. Anyone had success in trimming the rubber? Not a show truck just a daily driver. not sure on adding relays.. Also going to see if I can slide the regulator a little one way or another as there was some body work done around the four regulator holes.