With pain I agree that one needs to know what the roof structural details are before starting ...and know what the ramifications are. Yep the bottom cord was not attached to the stick rafter...so we can no longer jack up to eliminate bows in the "A" stick rafters and insert webbing between the bottom and top cords.
There is talk of placing a large "Y" support ...from a plate on top of the loadcarrying wall which runs under the ridge of the stick rafters ....to the mid section of the upper cord. The Y support would have a long span and would not be as strong as a fabricated truss
It seems that replacing with new engineered/fabicated truss rafters on a roof that is actually spans 32 ft spans (16ft centers
) on a low pitch is a preferred going forward solution.... HOWEVER ..it seems a contractor has a problem with getting a overhang beyond the exterior wall with any new truss given the current pitch...so he is talking about attaching overhang to the new fabricated/clipped truss by notchng into the 2 by 4.
I am vulnerable and in a crisis! ( my roof is open and tarped...it is raining...and the full truss solution is not known .)