Pedal problem I did not consider, so I will remove, check for bearing wear, grease the threads and reinstall. Had no previous issues with the Ultegra pedals but should investigate all possibilities. Thanks for suggesting, will follow up. Regarding crank removal, the k type/Scandium BB is an ISIS variant. Hollow, to reduce weight I imagine, and has no splines. The crank bolts, also hollow, thread into the BB. I can not tell if the crank arms thread onto the spindle and standard extractors don't work. The bike I bought used and the previous owner had them installed while going to school in London so he has no ideas. KCNC support has been non existent, they just don't respond. You mention a spacer, the only spacers/washers I see are for the pedal bolts and one between the non drive side crank bolt and cap. Where exactly would spacer be incorporated, this may be the problem based on your remarks. To this point I have removed and retensioned all the threaded components that don't require removing the arms since I haven't figured that out yet. Thanks to all for your input.