julesg007":1neetyox said:Hi,
Can't help with a M900 but perhaps you can seek out a 34.9mm and shim it? I think of the 3 sizes Shimano made the 31.8mm is the hardest to come by and you'll probably have more joy with finding a 34.9mm. I was looking for a 28.6mm XTR M953 T/P but couldn't find one so I am now using a shimmed 34.9mm version and had no probs. I'm about to change frames and will re-use and shim down to 31.8mm.
If, however, you 're not completely stuck on using a M900 I do have a M953 in 31.8mm in a B/P.
Jules