Went through the same process as before to fabricate and fit this fourth rib. Here it is all clamped up in preparation to determine the angle of the top flange.

Top and bottom flanges completed.

I also drilled this plate for the firewall as well. Tomorrow I'm planning to make up a couple brackets to attach the forward ends of the ribs to the firewall plates. Thereafter, I should be ready to fit the canopy frame skin.