I had to replace my front storm door this fall. When starting I found everything rotten so I rebuilt the entire area with sidelights and everything. I had a problem with the floor coming up with the last one but I thought I could cure the problem by screwing each wood board on the porch floor down and then laying a 1X6 over that to create a smooth floor for my rubber seal. Everything looked great. Now that it is winter the left side has come up about a half an inch and now I have a gap at the top seal. Any suggestions??