Hi Sean,
After hearing about using oven cleaner for years, I just recently tried it for the first time. And it worked just great on resin for me. I've now used it on figures fron several different kit manufacturers with no problems on any of them.
One thing I keep hearing about is spraying it on, putting it in a bag and letting it set overnight. What I've done is spray it on, let it set for an hour or two and rinse it off while scrubbing with an old toothbrush. If needed, I'll repeat this and it takes off all but the paint and primer in the very deepest and smallest of folds. No real difference from when I've let it set iovernight except I can get back to priming it the same day.
Just my experience

Good luck,
Craig