Update: I can adjust the clutch so it won't hit the cover and still work properly. Only thing is it's still slipping in first gear and worse than before...
It isn't changing gear, but maybe it's transmission-related and not clutch-related. Or maybe it's to do with the cush springs?
When I rebuilt the basket with new cush springs, and it scraped on the case, the shift cam bolt came loose. The clutch was slipping all over the place. I tightened that bolt, and it pretty much stopped. Now the bolt is tight, and I'm not really sure what's going on. It's when I rev hard in first gear, every 6 seconds or so it'll slip and rev high for half a second and then I'll get power back...
There are some
similar issues here, but mine isn't jumping out of gear. I think it's still somehow clutch-related, as the symptoms have changed after installing the different plates. Although
this thread seems to present similar symptoms, it could be worn-out dogs.