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Author Message   Brcamera Tinkerer Username: Brcamera Post Number: 2 Registered: 08-2010 Rating: N/A Votes: 0 Posted on Tuesday, August 10, 2010 - 01:52 am:    The fact that it gets sluggish after resting for a while tells me that it most likely is oil residue. If you are certain that the blades are totally free of oil, then I would check the blade operating ring for oil residue. It would be a rare case where the problem is a weak spring, normally the issue is some slight binding caused by wear or oil.