As I read what I've recently written, it all sounds so easy. It wasn't. I was constantly searching up stuff on this site, studying YouTube videos, and trying to read between the lines in the shop manual. It was slow going and I had no idea what step was going to be the next step until I was there. It was mentally exercising, physically exhausting, but damn it was fun. At some point I had unscrewed the timing chain tension bolt ALL the way. Not understanding how it worked, I thought I could just screw it back in as the last step of re-assembly. By some crazy chance I just happen to see a little washer just laying there, beyond the magneto. It was from the tension bolt assembly. At that point I knew I was screwed. I was trying to avoid taking more stuff apart, especially after getting things looking somewhat normal, but the whole magneto assembly needed to come out. That required a master class figuring out how to do that with the basic tools I have. I got it out (front axle I think) and started looking for the parts to the tension bolt. I found them all... but one washer and I was convinced it had fallen into the gear box. OMG! I searched with needlenose pliers, magnetic screw drivers, flashlights, picks, etc in the tiny little areas I could see in. The was a small hole that was the perfect size for the washer to fall into, but I found nothing. I knew this would bite me in the ass if I just left it in there, but I really really didn't want to split the case and open up the bottom part of the engine. I re-assembled the tension bolt mechanism with an extra washer and put the magneto back in. I hadn't decided what to ultimately do, but in that process I saw that the missing washer was stuck to one of the magnets on the magneto. Thank god! I had just wasted a couple hours trying to find that washer and several more removing shit, pissed off the whole time, but at least I knew it wasn't in the gear box and I could move on. I pretty lost a full Saturday (or it might have been the whole weekend), but I was so happy to move on.