Found the other one too. Part 92150-1641 is used on the Ninja H2 on the crankcase. It took a little sleuthing but I found them all. I assume all the crush washers are the same. I ordered 6. I'll have all the plastics off for scratch repair and repainting so figured I'd do all the little things I've been putting off (doohickey with torsion spring, banjo bolts to minimize oil burn, coolant flush, thermo bob...). Oil was done recently and replaced with T6. Seems to be using less oil than it did with the dino stuff. What else should I do as a preventative measure? No sure if my engine has the deep hole issue. I'll check it while I have the generator cover off. The PO scraped off some stickers he had put on using a screwdriver, as far as I can guess, so I'm going to strip off everything else, resurface and repaint. He gouged the plastics pretty deeply. May also repaint the tank and front fairing to get rid of the silver. Thinking of going with a gloss khakis and black color scheme (similar to the gloss tan color on the Tacomas). Black fairings and fenders, tan tank and front fairing...basically everything black will stay black but everything silver would go tan. Also need to repaint the happy trails crash bars that the PO put on. They are pretty faded and need the rusty hardware replaced. Just finished a bunch of maintenance on my Concours 14 so time to get the KLR up to snuff.