We recently bought an 1890 farmhouse. The kitchen had blue carpet and a carpeted platform in at one end of the kitchen. Needless to say it was a mess, so we pulled out the carpet and platform. Most of the floor seems to be subfloor and a small portion has linoleium over it. Our problem is that it sags in several places. The kitchen is partially over a over a wet basement. We have jacked up all the parts that we could. But we still have one area that has about a 1 inch dip in the center of the floor that we can't jack up. We would like to put down peel and stick tiles but no sure if they will stay down. Is there anything else we can do to fix the floor before preceeding?