Hello, I am writing in this forum because I have run into a roadblock while building the AR3 robot, and was wondering if anybody has suggestions.

I assembled the J2 motor, and in the next step I had to connect it to the robot by sliding the J2 motor shaft into the J2 spindle. However the motor assembly is not able to be fully inserted through the J2 turret housing, and as a result I was not able to secure the J2 motor base plate to the J1 base platform. I used lubricant to try to get the motor assembly to fit through the J2 turret housing, and even put the assembly in the freezer for 30 minutes, and also used sander paper to smooth the shaft of the J2 motor. None of those methods worked, so I was wondering if I maybe misunderstood something or am doing something wrong?

If anyone answers this I greatly appreciate it