My bad, I meant BB shell width side to side (from nds to ds), and spindle length (not width). The reason I ask is that GXP come in 68mm and 73mm. See pic below to find yours.
You’ve installed the crankset to full torque: does it spin freely and without play? If yes and you’re confident at adjusting the front derailleur, then try adjusting the derailleur.
Edit- cloudy minded right now but from what you’ve written it sounds like it should be properly installed with that 3mm spacer, which is the minimum for that BB.
Interesting, this is what's so confusing. This is the resource I've been using, which recommends a 3mm spacer on the drive side.
The crank does spin freely, though there was no need for me to use the bearing pre load adjustment collar, as the cranks had no play in them when installing.
My bad, I meant BB shell width side to side (from nds to ds), and spindle length (not width). The reason I ask is that GXP come in 68mm and 73mm. See pic below to find yours.
You’ve installed the crankset to full torque: does it spin freely and without play? If yes and you’re confident at adjusting the front derailleur, then try adjusting the derailleur.
Edit- cloudy minded right now but from what you’ve written it sounds like it should be properly installed with that 3mm spacer, which is the minimum for that BB.