one of the touted features of the Power-torque system by Campy is ease of maintenance, but it looks anything but. From the installation instructions they have posted, it appears you need an extractor tool to remove the left crank arm, the same you need for removing the bearings in with the Ultra-torque system. Also I wonder how you're supposed to replace the bearings in the drive-side. Since the spindle is now twice longer, how are you supposed to use an extractor tool? You need a monstrous extractor with long enough arms to reach at the bearings.