Hi Steve!
Welcome to the Thorn Cycling Forum. So glad you found the Sherpa you've been seeking, and in pretty quick time!
I'm sorry you must deal with rust, but it can be easily addressed. If you go to the menu at the top of the Forum screen and click on "Search", then enter "Rust" (no quotes), a wealth of information from past posts on this topic will come to light.
All the best,
Dan.