I completed the last of the internal ribs. The remaining inboard and outboard ribs are easy since these can be squeezed. I also torqued the 4D aluminum fitting. To do this I had to calculate the equivalent torque using a crow foot . Required torque T = 55 in-lb, L =7.5 and E = 0.813, so Teq = (T x L)/ (L + E) = 49.6 in-lb