There is a massive difference in cleaning a 75,5000ns case and a 38,640.. I use very nasty stuff to get the bigger cases cleaned off.
There used to be a kid in argonia that would clean cases, I think he was closer to 15.00 -25.00 for the larger motors.
I am just saying this as if someone gives him a bigger case, he might "burnout" at the 7.00 it takes for 1-2 hours of cleaning.
Thanks for this information. Since I've never cleaned cases bigger than 54-1280, I didn't realize how hard those would be. He might have to make those "negotiable".