• Hi Dan, thanks, yeah, that was my first instinct, so as a test using the bottom bracket I have I screwed in the cups equally, leaving the 2mm gap on both sides. Next I fitted the cranks to check what the chain line would be like and the inner chainring is really close to the driveside chainstay, so I think I need a different bottom bracket with longer spindle anyway.

    It just seems so odd that a UK frame builder would use a 64mm bb shell, it doesn't look like it's been faced, so guessing it was built this way, weird.

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