I've bought Milwaukee Bicycle lockring and realize that I can't put it on a standard formula hub. It seems like it's "bites" the thread for 1/4 of the turn and then stops. I do not want to force it with tools, but I can't turn it further by hands. Both hub and lockring are brand new, I've tried my old cheap lockrings and they are working fine with the hub. What is it - bad lockring or incompatible threading? I'm assuming that formula lockring thread is 1.29" x 24 tpi but can't find milwaukee lockring specs. Does anyone else have same problem with MB lockring?

P.S. I'm perfectly aware that lockring thread is left-handed. Just saying...