Ok Moto so long as its all going to happen thats Kool.
35 year old stators seem to work one day and stop the next. who knows why, Like vandy said, these 2 here are an unknown so id just be sending you another unknown as well. IF the guy is rewinding then at least you know that should be good to go.
Good luck with it all, the MX250a is a bloody reliable and fun bike, after you have ridden it for a while they become almost predictable and wisper to you what ails them when there sick, you just have to be listening ......