I have a similar problem; the posts are still ok but they were not sunk deep enough. I live on a salt water river and the posts are leaning towards the water and subsequently the cottage is slipping off the posts. The door and window frames are all out of whack and the main floor is "wavy". Any how... I think the best solution is to jack up the house and lay a concrete pad then set the house back on the pad... If anyone has any better minimum cost solutions I would be more than happy to hear them. I don't have much choice of contractors where I live and I don't really want to get hosed because I don't know all the possible options. Thanks.