Although I'm still stumped as to why you've been running that entirely inappororiate XT chainset the whole time!?
I’ve been waiting for someone to call that out, it’s half the reason I delayed the thread for 5 years !!!
There’s me wittering on about the ‘jewel in the crown of the cockpit ‘ whilst all along she has a massive dump
in her pants and everyones politely ignoring the stink!!!. I mean it’s such an eye sore in every way, you all should have developed a nervous twitch by now. It’s even an octalink !!
Truth be told, it was just a temporary cheeky swap over ages ago to keep it rideable and whilst M900 cranks turned up yonks back from Poland, the issue was finding the correct square taper bottom bracket size and model, since couldn’t find out for sure !!?
As best I knew it should be 107mm x 68mm shell, but could be a 72mm and assume it’s English thread. But is it XTR UN-91 or Specialized Titanium
I don’t have many bottom bracket tools either, so it was meant to be swapped out with a cheap taper for size check when the wheel build was due which hadn’t happened at this point.
I went with a 170mm crank set, but no idea what JMCs was
I figured if was dual slalom bike you want shorter right! …I’ve got the titanium bolts for it somewhere aswell.