I saw a post from about 10 months ago that spoke to pre October 2010 MXYBB's not being ideal for 2x10 set up (SRAM or Shimano). Mark M had a great post I thought. He mentioned that a frame (July 2010 MXYBB like mine) WAS ABLE to accept a SRAM XX crank 38x26. Talk to me. If this is the case, and it works well, I am all in. If not, I'd like to get the XTR 2x10 to work without just installing my BB off center. I liked Mark's comments about keeping the BB as centered as possible with only one spacer. Let me know your thoughts. Thanks.