Re: 9.5 friction screw

[frankr]

To explain: There are supposed to be two thick fiber friction washers, one above the semi-circular plate, and one below. When the lower one wears and falls out, attempting to tighten the screw lifts the nut out of its pocket, so it spins, making you think it is stripped. But with the thick washer in place, the nut is spaced down into the pocket, which holds it from spinning.

Those friction washers had a very short life.