Thanks JohnF
He gave me a spare handle. I have some pictures I'll post later today, and yes my head has the 6 bolts - just checked
I was able to have a quick look at Johns 6/1, and mine has some extra gear around the Governor, that might have been causing the hunting. Looks like a seliod of some sort hock in that stops the governor from moving. Must be part of the automatic start features. Since I sill not be using that, I'll have to disconnect it.