We have recently had water damage to our basement and have begun removing the drywall wich was wet and mouldy. Once the drywall was off we could see that some of the studs are black at the bottom, including the outer wall's corner post. Does all wood that is discolored need to be removed and replaced? We are trying to do as much as possible ourselves to save money but if they need to be replaced we will bring someone in. Just trying to figure out if it is time to call in professionals. Thanks.