Update for the long hot summer. Got the RT3 rideable and took her down the drive. All seemed cool until I tried to down shift. No workie. Stalled it out, too heavy to bump start, broke my foot kick-starting, was able to down shift again. Said to self, self it was just a thing. Sure it was. Went back down the drive. Upshift great, down shift no workie. Scheisse! Stalled again, broke foot again, down shifted once then stuck, limped home in 4th gear. Double Scheisse!!
I figured out that if I applied slight upward pressure on the shift lever after the down shift, I could go all the way through the gears no probbo. So I knew summat was bodged in there, return spring methinks, tho it seemed fine when I installed it. Removed the clutch cover, and here is what I found:
This bit looks okay (shift lever #1):
So waiting on parts.
Oh and someone may have busted another clutch basket cos they're too damn impatient to wait on the clutch-holding tool they just bought on fleabay. Don't know who that might have been, tho. Shhhh.