I'm working on a 2010 Stumpjumper Expert Carbon 29er. The bottom bracket bearings are fried. According to this chart from Specialized, the BB shell in this bike is not compatible with SRAM BB30 cranks. http://service.specialized.com/coll...om-Bracket---Oversized-MTB-Bottom-Bracket.pdf The crank is a SRAM X9, so I was expecting it to be a GXP crank. However, when I pulled the cranks it was a BB30 crank. This leaves me puzzled as to what type of bearings to get. Any suggestions?