I have attached a photo or three so you can see what I am working with here. The cause of the water damage was the roof. It has been replaced. But... becuase the water damage was neglected for a long time, This wall has actually begun to sink about 1/2 to 1 inch. (where the sill plate of the wall rotted and the weight of the roof pushed the studs down into the rotted wood) So... It is a load bearing wall and I know that I have to start by building a temporary wall on the inside to support the weight of the roof. (YES.. I know there should be a header over the window) My question is this.. How can I lift the trusses up the 1/2 to 1 inch that they need to be before re-framing the wall/window? I have thought about using 3 bottle jacks, and jacking each truss up until all are level. Then, building a temp support wall on the interor to hold the height and weight while tearing out and re-framing the rotted wood. (and adding a header to the window). Sound like that (wood) work to you guys and gals? The reason this is important is the 1/2 to 1 inch drop has caused there to be a very slight valley where the shingles dip down slightly before protruding over the facia board, which is now 1/2 to 1 inch higher than the roof decking)at the edge of the roof. This small valley holds water and if not fixed, I will be right back where I am today. I hope this makes sence.. Any suggestions on how to lift the trusses or elaborations on my idea will be greatly appreciated.