I have a 1992 FA288 Consolidated Dutchwest. I got a gasket kit from Black Swan and used the biggest gasket for the top just over the cat. it fit the channel but I had to use longer bolts on the top because the top was too high. Now I am getting smoke out of the top. The manual I foundsays to use 3/8 on the top. Does anyone have experience with one of these kits? Should I regasket with 3/8?