For my MP4/13 I just glued the seat in as directed and masked it off. I had the masking tape upside down so it stuck to the underside of the top of the body, I hope you understand. Just take your time and use angled tweezers.[/quote]
I used this technique

when I done the Williams BMW FW24 and I took my time

with no problems! 1 thing to watch for though is if you used CF decal inside the tub just watch the tape doesn't snag on it & tear it off when removing it.