You could try lubricating the slip rings. If that doesn't work, pull the wheel and lubricate the upper shaft bearing. If you examine the bearing and find it's shot, it can be replaced inexpensively.
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Amateur restorer. (Well, once in a while I have been paid for it)
__________________ 1966 Mustang GT RestoMod Project: 307c.i.d.,Holly 600 4brrl, TrickFlow Heads, Power Disc Brakes, Integral Power & Tilt Steering, AOD, 9" 3.50 posi rear end & a bunch of other stuff.
Project start date 1999. Completion date... fagidaboudit!
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