I am remodeling a bathroom and right now am trying to strip the floors. There is 1 layer of viynl that is fairly new and came right off. Then there is another layer that probably was installed when the house was built 50+ years ago. That layer is coming off ok but it's leaving a layer of paper/glue behind. I tried scraping but it's stuck very, very well. Any suggestions on solvents or techniques to get this stuff off?