Well, the Senior Kadet is ready to fly, so I went to put the prop and spinner on. I have found that the Dubro Plastic Spinners are nice, they have the locking nusts on the backplate and use Socket cap screws. So I put the proper adapter in the back plate, and I cannot get it all the way up the engine shaft. I get to the unthreaded part, and it will NOT go any further, and there is not a larger ring adapter in the Dubro package, the one I am trying to get on there is the biggest.

Anyone have this problem with the 61? What can I do besides go buy an aluminum spinner? I don't feel too comfotable reaming the adapter out with a dremel, it might not be concentric with the backplate.