I've been trying to disassemble my linac so that I can find some points to screw it onto the new mounting plate, but I can't seem to be able to get the old one off. I can take the bottom cover and the gears out, but the top half seems stuck to the main barrel of the actuator, almost as if it's glued there. I've taken out all the screws I can see, anyone know how these things come apart? The only other thing I can think of is the nut connected inside the barrel, visible if you unscrew the bar, but I can't get that out yet because I don't have the socket to reach inside.

This is about what mine looks like, and basically I just want to ditch the motor and the entire assembly attached to it, just leaving the main barrel: