I copied some original stuff I collected. Let me know if anyone is interested. These didn't cost much. Not trying to make any money. Just figured we're a small bunch and would pass it on to those that care.
I'll second the Rudy Calin endorsement. He just rebuilt my Bosch DU4. I took a hit testing it out.
Wow!! Felt the zap through both shoulders! Very reasonable. My rebuild was under$200.00.