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I do know an out of the box aftermarket O ring 530 chain will rub into the blanking seal and crankcase on a 550, saw it a few times so it should do the same on a 500.530hd chains of today are stronger than 530hd chains in the 70's alegedley
Two things, The 20mm is the widest part,the heads of the pins, Secondly, it should be difficult for the sprocket to move as well locking plate should hold it in position. Any further thoughts?I admit I can't be bothered to remove the sprocket cover to check the clearance, I was just inquiring for the next time I need to swop a chain.Sent from my SM-A750FN using Tapatalk