I have a Series 2 Bridgeport. It has power feed for the Knee & Power feed for the X & Y. I am missing a motor for the X & Y. So I am switching the Knee motor for the X & Y I removed the motor with the transmission housing attached. They are attached by 4 5/16 screws & that is it. I have removed them & the housing will not detach for the motor. The worm has slop & is not binding. I thought it may be pinned. I have done everything possible. I am wondering If I have to totally take apart the motor from the other side & maybe a snap ring is there?? I really rather not. I was told by some bridgeport workers it should just come apart after removing the 4 screws. Has anybody done this before??