Plugin, for what it's worth, I've only tinted one and it was from an older great planes kit, the super aeromaster. I cut the canopy to fit before I tried my hand at tinting. I made one mistake, I cleaned it with acohol prior to putting in the Ritz dye and it scratched, acutally skuffed up a bit. I used a stainless steel bowl that I could just get the canopy in and made sure it was fully submersed. I went up to around 170 degrees and pulled it and checked for color every few minutes. The canopy turned out great other than the scratches. It was only in the bath for about five minutes or so. There was no distortion at all. I also got a good uniform color that I wanted.

You might try with some of the scrap material first if you still have the trimings.

This isn't a good shot of the canopy, but it should give you a hint of the tinting job.

Don