I’ve hit this same issue on my new/old house. Great hardwood (oak) floors with nasty glue all over them. Found an article on it:
http://209.164.8.65/magazine/2001/march_april/REmoving_lin_adhesive/index.shtm
They say to start with water – but I’m thinkin that will warp my hardwood. And using vinegar or high-strength citrus decreasing solvents. Maybe trying hot iron or cold ice, then using a chemical like Isopropyl alcohol, paint thinner, xylol, lacquer thinner, or paint stripper.
Any of this stuff work? Will it damage my hardwood? What brands of sovents have anyone used that worked well? Thanks all.