I dont like exposing painted plastic to heat like that. I've had a bad experience.
Last night I used Tardis to remove the backing pads used to hold on number plates. Easiest way by far.
Spray on, leave it, agetate and spray again, come back and wipe off. Second pass to remove any glue seidue and then buff off product once dry. Also leaves a nice clean prep'd surface for the new pads
