X-ultra assembly issue

Hello all - this may be a very dumb question.

I cannot figure out how assembly my x-ultra grinder. When I try to put both the bearing nut and locking nut into place the locking nut does not go low enough to actually lock. The only way I can lock it with both nuts in place does not allow for enough space for the handle to be attached.

I have pushed the burrs all the way up as far as they will go but there is no way both nuts fit.

The only way I can lock the locking nut correctly is without the bearing nut. Am I supposed to leave the bearing nut out? I am worried to use it this way.

Please bear in mind, this is my first real hand grinder, I have been using the hario mini mill thus far in my at home setup.

Thank you in advance for any recommendations.