Cap't Wally Saildrive was I28 electrical
I mentioned your issues w/the saildrive to the guys who own "Wisdom", an I28 in Milwaukee. Lee graciously offered to take your calls and share his 28 (more?) years of care and feeding of their drive... He has swapped engines and kept it going.
Use the contact eddress in my previous post and I'll get you two connected. They don't do mail lists...