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@gubhi
I've ran into another problem..... I have a Royce Italian threaded track bb to replace the worn out Italian track miche bb. But the royce cups won't thread in, it seems it is too big by just under a mm. The measurement on the miche is 1,37x24bcs and the Royce says M36x24. They're both 70mm track bottom brackets so why do they have different sizes?