I’ve had a grating noise in mine since I bought it a few months ago. I used your instructions, Graphite (and thanks to Clay for pointing me to them, and the advice), and sanded a wee bit from the plastic cam follower, and now it’s smooth and quiet. Thanks a bunch, easy to follow, and fun to see the innards of this device.
Regarding the cylindrical foam piece, mine had fallen into the channel where the bullnose wedge rides. I’d be interested in knowing what it’s supposed to do, and whether it’s important. I reassembled without it, and don’t see an immediate problem. I also don’t see how it would stay in place if I try to put it back.
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