I had a pinion gear screw strip during my cannonball run. It's the large headed screw that holds the pinion gear onto the crankshaft end inside the timing chest. The check ball and spring go behind it. I had to use one from another Douglas bike since I had no inventory spare. I had to put the working spare back over to the donor bike and now need a replacement for my original engine. I think any 350 screw up to the early 20's is interchangeable...
Any leads would be appreciated.
Steve