Hey Tech heads, Question? I just picked up a Specialized Sirrus hybird on the cheap that I plan to use as a commuter. Currently it has Octalink XTR cranks (pre-outboard bearing type) on it but I want to swap that out for road Cranks/rings like Shimano 105s. Anyone know if the XTR's and the 105's use the same Octalink spline interface? I don't really work on road stuff very much. The bike is already has a Ultegra FD so I'm assuming this will work with a road 105 crankset. Thanks, Pho'dUp