Wasn't most of the pictures I have seen in the difference is the windings themselves and the oil holes. The original windings looked like a kid did them. I am from back in the day where starters and alternators were rebuilt and guys did amazing work. I would trust a guy who rewinds as much as a factory I think. They will make sure the windings are correct and the materials are first rate.Your rewind offer sounds like a good solution. I'm sure the shop that does that will inspect the old unit and find the problem, thus helping them do a good job. Glad you could cancel the mail order unit. These things have to be exactly right to work well and produce the original power output. wish the best, beech
I wish th OP luck on this and hope it turns out well. I also appreciate him sharing this with us so we all may learn.