Another option, add weight to the shell,….I like those sticky back tire weights in strips. You’ll be the hero, and not the zero if you can muster the drivers and work through the slip to get your train a ‘movin……..then you’ll be an engineer, and not just a remote holder,…😉….just my .02 cents,….my converted older Lionel scale Mohawks have no tires, and there’s nothing more dramatic ( and entertaining) than working through the slip on 50-60 car drags, ….snorting, huffing, smoke everywhere,…..cool stuff,……I’d only add tires via machining if there’s just no possibility to get moving,…..
Pat