I started the left conical air ramp this morning by shaping a piece of cardboard to fit the corner. I made the final piece out of .032 2024-T3 aluminum. It took quite a while to shape/fit it making sure I left 1/16 of an inch space for the rubber transition piece. Once fit, I drilled and placed a few clecoes to hold it in place. On the horizontal line of rivets, one hole was common hole with the 2" air intake hole, so I used a hole finder to locate and drill it using