I've sold no less than a BILLION of the PRP truck windshield seals and cant remember ever hearing an issue. Precision has a great video to show the installation.

Have had one guy (out of probably 2000 sales) tell me the PRP seal that fits all A bodies from 68-76 didn't fit. My PRP guy said thats BS. Said he has an A body windshield frame in his office. He said did your customer watch the video and use the rope method. My customer calls back and said it fit great?!?!? Least he fessed up.