You're right as I recall. I had two of these HT girls. First one was a dream for a year until it started slipping. Before that started happening I had ordered a second one. Was still working on the first one, trying to create a slot for a woodruff key when the second one came... installed it on a second bike and it was crap from day one... went fifteen feet and the clutch no longer worked. I lost both engines in a fire a week later, so never resolved the issues. All I can report on the positive side is that first year with the first engine... just a real nice experience and no 'wobble'. Sounds like a bum motor to me. Much as I liked that first one I'm done on HT automatics, having moved on to four stroke automatics with pull start... oh yes.the sleve you put on covers the keyhole there is no cut in it like the stock manual gear.... it uses friction and the bolt... thats what mine is
SB