OT: IBM Electric typewriter servicing info needed.

This is offtopic for a Classic Computer list, but it's at least classic office equipment from IBM: I recently acquired and am trying to restore an IBM Electric Typewriter. This is a pre-Selectric machine, and even pre-Executive machine. My mother used an IBM Executive electric typewriter years ago to type church bulletins and misc. The machine I have is an IBM Type 11C according to the model plate on the bottom. The few references and pictures I have been able to find online make it appear this machine was new in the early to mid 1950's. I can't find any information about this type of machine anywhere. There are a few Classic Typewriter sites, but what I am looking for is servicing information, how and where to lubricate, etc. The typewriter works mostly fine, but a few keys hit much lighter than others and the carriage shift mechanism is sticky. I've already solved the issue of not being able to find ribbons by rewinding a new generic fabric ribbon onto the IBM spools. I want to restore this machine and use it for writing. There's an appeal to writing direct to paper that is missing in computer-based composition of text. I'd also love to find more resources for older pre-computer IBM equipment, and possibly a few more pieces of such equipment for my collection. IBM was once about Time Clocks and such, long before it was a computer company.