Vinny - I have some 3D printed sawdust screens for the rear of that AF cover. Mine are stiffer than the ones Max or Brian sell, once they are in they are in to stay.
I took this 7-55 apart for a good cleaning.
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Son Jeff helps out on Saturdays, he is pretty patient with working at the parts washer.
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Ran into a few issues so I had to take it down further than anticipated.
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Those 3 odd pieces in the basket are the bearing "cage" for the loose needles on the connecting rod.
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Cylinder is immaculate. Those "dotted lines" are residual hone marks from the manufacturer.
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Mark