cup = not too tight, lock ring = tight as hell, right?
Lockring on your wheel rather than you crankset? I know you said it's your cranks but definitely sounds like the problem I had with my cog unscrewing a little then tightening back up...
@TM started
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Lockring on your wheel rather than you crankset? I know you said it's your cranks but definitely sounds like the problem I had with my cog unscrewing a little then tightening back up...