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Оригинальный сообщение: Saninder Singh ,


I was experiencing the same issue and googled for answers, after which I tried many of the suggested solutions and what seems to have worked is the following:

Pull L1 up as far out as socket permits and blow (or vacuum) all dust and debris at all angles (360°) and then add just a dab of petroleum jelly, making sure it covers all the visible surface of the rotating ball of L1.  It seems to have worked. Just a dab.