I'm an engineer and i build my own bikes, are you all aware that the big manufactures are ripping you off, here's an instance, you are being forced to buy a complete new bottom bracket sealed unit when the bearings could be replaced, the standard 6002-RS costs a couple of quid, except they have had them made as specials and are non standard size, though they are marked up as 6002's. They're not even premium brand they're made in India by KNK, and cost pennies.
I might re- machine some units to take standard bearings, just to annoy Shimano.
I might re- machine some units to take standard bearings, just to annoy Shimano.