The one good takeaway I see from your purchase is the tender shell looks very straight along the lines of the tender frame.
Last summer I was given a 700E from a good freind . The locomotive had a butchered up brush plate and no whistle in the tender so I made a investment in a good used motor and later on a tender pickup roller and period correct whistle. All in all about a 430 dollar investment.
About every so often I take it out of its case and run it to see if the cowcatcher tip is getter closer to the center rail. If you watch the video at the end you will see my tender has quite a bulge.
