I reduxed my remix in TinkerCAD (link) to achieve the following:
Remove top nodules. Mine didn't fit Lego pieces anyway (too loose/small) for faster printing
Added cutouts (see picture) for compatibility with Lego City Commuter Train, whose adjustable tracks fitted the original but static curved and straight tracks did not due to having cutouts that the original and hence, my first remix, did not
Print settings:
PolyMaker PolyTerra PLA White
0.6mm Nozzle
0.4mm Layer Height
Support Enforcers for overhang (left track when viewed from each end)