Originally Posted by ch67guy1
Those new fin top fairings come pre drilled for the screw holes that attach it to the plane?
No, It had no holes. What I did is make an alignment tool with scrap sheet metal. I cut several strips about 1/2"W X 10"L. Then I bent each one over aligning the ends together, crimping the bent so the metal lies flat with each other. On the other end of the bend I drilled a hole through both pieces so the screw would go through, but not the head. Made 8 of them. I took the old faring off and screwed one side of the strip from the inside to the plane. Then I opened up the tool and slide the new faring between the flats pieces of the tool and aligned where the old faring was positioned. Then pushed the exposed part of the tool to the new faring and marked the position of each hole.
Sorry, the explanation my not be very good. The next time I go out to the plane I will take a picture. Anyway, it is easier then it sounds.