I had to use a Dremel tool to cut the holes out of the molded cooling fins that fit in the cutouts on the left and right side of the top cowling. Then cut the flanges on each so they were 1" wide from the joggles and fit them onto the cowling. I had to slighly sand a few corners but they fit pretty well. Then I drilled 9 holes in each one, fit it back on the top cowling and taped it down, and match drilled the holes. Tomorrow, I'll mix up some epoxy/flog and bond them into place. Eventually, I'll mix up some glass bubbles and epoxy and fill in the gaps to create a one-piece look.