Rockenstein,
I think, too, that this is going to fix it and that all will be well. I have two bikes down waiting either for parts or in the case of the Elgin, tools. And the weather is perfect with trees leafing out, wild flowers coming into bloom and the mountain road calling out to be ridden. Ah well, as with you it gives time to attend to other things such as maintenance and fabrication. Below s a picture showing the key way on the crank shaft, obscured by grease and filings until I cleaned it off a bit. For the benefit of others reading this thread.
And as Elmo wisely pointed out, I have increased my knowledge about the clutch, learning new and useful things. And I have also learned about the diamond tipped dremel attachments which are going to be handy for other things in the future. One bit of knowledge leads to another, just as your juice can gas tank has led to other uses for the lowly tin can. A case in point is an air cleaner I made today from a tuna fish can and a stainless steel pot scrubber. It is pictured below and I like it. I'm not a big fan of plastic, especially on a 1939 motorbicycle, but I'm a cheap son of a gun. I have become a kind of tin can expert, studying them as I shop for food. Everybody else is shopping for groceries while I'm also in the bicycle supplies aisle. Ha! Thanks again for your help.
SB