measurements all seem to be somewhat ok. when putting the crankset on backwards i do think the gap stays with the drive side vs non-drive BUT it is actually quite hard to say because the chainstays are ever so slightly different formed (i.e. dimpled for drive side and slightly different curve for the non-drive to make room for the disc)
i think i'll just have to try another crankset annoyingly. hope someone in my cycling club has a spare
thanks @PhilDAS - appreciate the advice
measurements all seem to be somewhat ok. when putting the crankset on backwards i do think the gap stays with the drive side vs non-drive BUT it is actually quite hard to say because the chainstays are ever so slightly different formed (i.e. dimpled for drive side and slightly different curve for the non-drive to make room for the disc)
i think i'll just have to try another crankset annoyingly. hope someone in my cycling club has a spare