i had forgotten completely about ceramic coatings, and from what i've been reading the more parts you can cryo the better. still a noob when it comes to rotary motors waiting for a few books to come in the mail so i don't sound so challenged but i think it would a good idea to wpc treat the plates after resurfacing them then nitrate them. feels like money spent in a good place for some extra insurance. as far as clearances go do people make plus sized corner seals and buttons to make up for that treatment?!? (NOOB-ISH I KNOW)