I have the 7 mm hex key for the bolt that holds the crank on to the taper. 7mm keys are not easy to find. Upon loosening the crank bolt, it loosens a bit then stops. The bolt goes through a disk with two holes that looks kind of like a dust cap. Do I have to remove that? It's stuck and I do not have a tool for it. I tried needle nose pliers with the tips inserted into the holes but cannot get much of a grip. Any suggestions other than getting another tool?
Thanks if you can help.