Hello:
I have acquired an FM Trainmaster that is missing the battery plate (2333-129) but the shoulder rivet(2333-115) is still in place. I am interested in placing a new plate on the unit. My question is how does one remove the underframe(2321-46) in order to remove and replace the rivet and the new plate? I assume the rivet needs to be peened to set it. The under frame appears connected to the frame by four rivets. Do these need to be ground down to remove and expose the underframe to work on the rivet replacement? If so, how does one replace the underframe without rivets. Am I making this more complicated than it should be? Correct me before I do something stupid. Is the underframe just held on by the battery bracket and horn relay mounting screws? Thank you for allowing me to tap into your experience.