How does that old saying go? Nothing is more permanent than a temporary solution.When I painted my living room last month and re-hung the mantel, I noticed it's almost two inches off level. Right now I've got the low end shimmed up with two folded squares of cardboard and several pieces of a Sherwin-Williams paint stirrer. My house is built on the slope of a hill, but I never realized it sloped *that* much. Does explain why it's hard to keep the mantel clock running right.