Tim Daley found a great start on the 91A-12159 screw. I few seconds in the lathe and I'll have an exact match to the original. Only thing I'm missing now is the insulator. I have two plates with this shorting out. Not luck with phone calls to McMaster Carr, Tisco or Just8Ns. Wish I knew who was making the new distributors, they have all these parts in stock if I could find their name.