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Probably a bit of both for wear (shaft & body). I've wondered if a bushing could be sweated into the body and the shafts coated. It would make more sense to use a sealed needle bearing to get the low resistance to rotating needed while maintaining a gas-tight seal.
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'99 Black SA "OBSSSN" - gone but not forgotten.
Not all good technology is new, not all new technology is good.
.........Purple is Satire.........
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