How do I correct a mistake in a property deed?

My property abuts an abandoned rail line spur that was never rail banked. Land records show the now defunct railroad had an easement but never owned the land. Previous land deeds back to the mid-1800s show my lot extended to the middle of a rail line until a 1926 property transfer when the border moved from the center of rail bed to the edge. The next two deeds (including mine) perpetuate the error. Is my only recourse to go back to the title insurance company and ask them to re-file a corrected deed?

title company, yes.

excellent memory!

also, while you are at it, maybe you can pick up some odd real estate

cheaply; maybe you can buy some of that land beneath the tracks???!