Well, that would be a telltale sign that the spinner, or something up there, is not balanced. I don't know what you should do, but, I would get a new aluminum spinner and backing plate. Make sure it matches the thickness of your prop and crush plate.
See you in Mt. Vernon - 2005 - KR Gathering See N64KR at http://KR-Builder.org - Then click on the pics There is a time for building and a time for FLYING and the time for building has expired. Daniel R. Heath - Columbia, SC -------Original Message------- the plate has been "eaten" badly , the fiberglass is eaten exactly at the same place. Would anybody have a convincing explanation for that? What must I do?