Who said you have to fix it? There has been no lead base paint made since 1978 and most old lead base paint has been painted over a dozen times in some cases, but surely at least a couple times sealing it up pretty well. The old problem was kids would eat the flaking paint chips (why I have no earthly idea but that was the claim back then) and since 1978 it has to be disclosed that it is "possible" that there might be lead paint somewhere. Unless you and your spouse like to gnaw on paint chips it is a moot point and I often wonder why we still even bother with it. I sell many homes from Fannie, Freddie, HUD and I have NEVER EVER been told to remove it. The form gives you the right to wave any actions, the form just discloses the fact that it "could" be there. I would not worry about it at all.