John : I checked the prop track static, but never dynamic. The spline Prop hub has been sanded to clean slight rust, but the metal mccully prop fits the hub very tite I am waiting for a new front spinner plate.. I like the looks of the spinner that fits the nose bowl.. the more I am thinking, the prop nuts would loosen as the washers sunk into the front spinner plate.. It don't look like the nuts bottomed the threads.. When I reinstall the prop, I will use more washers to be certain..
Jim
