I have removed the wallpaper with no problem at all. In fact it was very easy using the method of pulling the top layer off first then applying DIF to the second layer with the 15 min soak in time x2. I'm now having problems with removing the glue. I applied another coating of DIF and using a warm water solution began removing the glue. But now the drywall seems to be blistering. Anyone have any input or suggestions as to what I am doing wrong?