One of the benefits of a train club is my fellow members have skills and resources I don't have. I purchased two LIONEL UP 15" aluminum offset dome cars on eBay for $50 and a modest shipping charge--a heckuva deal. But they came with channels in the extrusion for the red stripes you see in the photo which made them problematic for my GN Empire Builder with its stripes.
A club member has a machine shop and he generously offered to mill the shells. He returned them to me Saturday and, after a primer coat, they look great!
Also, I completed my touch-up work on the 4 NP North Coast Limited 15" LIONEL offset dome shells and will begin decaling them.