Hello all!, I am installing the butt ribs on my series 6 and confused with the instructions. I have the wings installed, and when I put the butt ribs in place to be mounted (dry run), it seems that the front and back of rib will interfere with the rear bolt and front pin removal for taking off wings! It would cover half of the pin and bolt. Also if I slide them out to where they will miss, then it seems like the most outward hole on the butt rib bracket will be hanging off the tubes on the headrack. I do have the flanges facing inward towards the fuselage, and I am exactly 35 1/2 inches from midpoint to midpoint from ribs 1 to 3. Am I seeing this wrong? Any pictures and advice would be great.