Found the "O" ring I needed to fix my bobbin clutch. Knowing Norm, he has a much better stronger one....who knows. But I believe Norm is extremely busy now. He is dealing with all the orders that flowed in during December with free shipping....and before the new January prices took affect. He also has events scheduled he has to deal with. And his wife is not doing well at all. So I did not want to bother him with having to find and ship me an "O" ring.

I got one at Ace. It appears to be the exact same O ring.

The package says has on it:
Danco Inc. Irving Texas
15/16 x 3/4 x 3/32 STK NO 35731B

just fyi to Norvise auto bobbin users.
jim