My big, strong, grown up son, Matthew, has become my hired labor since he is out of college for the summer. It is soooo handy to have him helping me for a few hours each day when he is available. I was intending to let the sag stay in the roof, and just strengthen the rafters against more sagging, but I got a big pouty lip from my sister Cheryl, the masters in architecture student! That was just not OK, she informed me! Blasphemy! Lol! So, Matthew and I tackled the raising of the sag with car jacks, which is working very well.
Matthew looked like a Tai Chi practitioner as he moved slowly and carefully, setting the jacks and boards (above) in place.
Tomorrow we will finish stabilizing everything, including adding the necessary triangles to the rafters for stability.