For post war locos with Magna-traction, I put them on a section of steel track to act as a "magnet keeper" and help save the magnets.
If you have any engines with traction tires I keep them off the wood or track to protect against flat spots.
I also store all cars and trains with the couplings open to "save the springs".
I do not know if any of this makes a difference but I fell better.
I cut grooves in my shelves with a router with a rounded veining bit about 1/8 inch deep, using an edge guide. Make the grooves to match the train wheels. It goes real fast and I can see what I am doing.
Post 36 of the topic below shows how I built my train shelves from 1x4 inch lumber for most shelves and may provide some useful hints.
https://ogrforum.ogaugerr.com/...ra-027-layout?page=4
Charlie