I've got to try that trick next time. Had to do some touchups on my Firebird after jambing the car first, then trying to tape it off to paint exterior. It looks good now, but too much work. I guess if I had more room to work, open the doors fully it'd help a lot too.I left the doors on and completely sealed the inside of the car. The doors were left open and the jams were done at the same time.