hey there, over the last few weeks I’ve ordered o rings,shims, and glow plugs from absolute hobbyz and Wallace motorsports. Wallace appears to be out of most novarossi stuff at this point, but Absolute appears to still have small novarossi things like o rings and stuff for high and low speed needles, base of the carb o rings, and other smalll things. I’ve seen cranks and pistons on eBay and Amazon of all places,not sure if it’s anything for your engine or not but it’s worth a shot.