BBSHD Lock Ring won't thread onto motor spindle

[dhdallas]

I am a good home bike mechanic but the BBSHD gray lock nut will just start to turn and then stops after about 1/8th of a rotation. Its acting as if the threads don't correspond to the motor spindle threads. It is NOT cross threaded. There are no visible defects to the nut or the spindle. The outer black lock ring spins on by hand easily. Luna Cycle support says the anodizing to the gray nut makes it stiff and to just use the tool and muscle it on. I hate to ruin it or worse, the motor unit threaded shaft. I did order a replacement lock nut to see if there is a difference. Anyone else have a problem with a stiff lock ring?

 

[dhdallas]

I got the replacement lock nut today and it spins on easily by hand unlike the one that came with the kit. I am glad I didn't try and force the original one on.