Bill, yes I did move the rings slightly and all 4 are loose in the groves. Could have been my imagination I do have a big one) but I thought maybe the first one I checked did seem a tad tight, so after I checked the other 3... I went back to that one and pressed it several times and it was free.
I want to check the prop now for anything loose and make sure all are at the same angle. I dont have a tool for it and it is Sunday so hard to get one today, so I will try and devise a way to check them. I dont want to confuse the matter any further than I have to, but the last time I flew it a few days ago, I did seem to get some more engine vibration around the 5000rpm mark when coming home. It was not there during the main part of the flight... only the last 2 mins of it. I was thinking at the time it might have been something I forgot to attach back on when I did my radiator back-flush etc, but could find nothing. So I suppose it might possibly be a prop related thing also. Now wouldn't that be a bummer after all the other work I done already. Time will tell. When I do eventually find the culprit and fix it....the only thing not new on this plane will be the engine block hehe.
Mike
