This lovely Royal McBee Administrator typewriter is a customers machine and came in as the paper tray was jammed, the bell clapper not working plus some cleaning. After cleaning, the tab set was a bit balky. Looks like a bit-o-rust on the back rail was holding the tabulator pins in place.
After another detailed cleaning, they all worked as planned, The jammed paper tray was a few previously bent parts. So after a bit of forming, the paper feed worked again. Ding!