I've actually over-splurged and bought a 102mm BB (in addition to the 103mm I already have) in my quest for a lower Q-factor... ... and almost immediately realised that it'd throw the chainline out (even if the chainring didn't foul the chainstay)...
Tip-top ta and trust you're likewise!
Bottom brackets, crank and chainring bolts.
I've actually over-splurged and bought a 102mm BB (in addition to the 103mm I already have) in my quest for a lower Q-factor... ... and almost immediately realised that it'd throw the chainline out (even if the chainring didn't foul the chainstay)...