I bought a 2hp SDG (with the yellow metal cone) quite a few years ago and never installed it. I really hate ladders and ductwork. Anyway it's time to finally install it. I have 6" s&d and Clearvue blast gates. I know when this machine was new someone posted how to connect the 6"s&d to the 7" metal... but now I can't find it. Tomorrow I'm going to attempt to boil half of a Fernco adapter and stretch it to fit the 7" metal, but does anyone have a better solution?