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@Verbs_&_Nouns
After some overthinking (and retro MTB Facebook advice) I’ve come to the conclusion that the spindle on the BB that I’ve installed is too wide. Main my concern is that I wouldn’t be able to shift to the big ring, and also having a really wide Q factor. I measured the BB on the Specialized (which was stuck in the frame and the spindle was loose, which is why I’m not using it), which is what I ran these cranks on, and that was 111mm. I ordered a 111mm SunRace BB to pick up today, but the shop called me and said they don’t have one in stock, but upgraded me to a Shimano 110mm BB. I’m hoping that the 1mm doesn’t make too much difference. I did also notice that I used to have a bit of trouble with the front derailleur rubbing on the big ring on Specialized. I’m hoping the new BB that is slightly narrower with a not loose spindle solves that issue.
I also am swapping out the front derailleur out from the modern Shimano Alivio to a Shimano STX, which is what this bike was specced with back in the 90’s. I’m also hoping that plays nice with my front shifter.