If I didn't have bad luck I'd have none...I spent some time with my current saw, truing up the fence and sliding miter table ti the blade; nearly perfect as far as I can tell; lubed the lifting mechanism and all is good.
This morning I went to recheck my measurements and change the throat plate...no movement on the lift mechanism.
It appears though the threads on the motor housing are stripped. My choices now are to 1) repair the stripped threads with heli-coil; 2) buy a new motor housing; 3) part out the saw and buy something new to me.
Dad911: let me know if you have any interest in spare parts.
Mike