Hi there. I've just bought a Scorpion exhaust and link pipe for my DRZ400 SK3. The exhaust was originally fitted to an SM. Well, the scorpion link pipe diameter is WAY bigger than the stock header so it wont clamp tight. Even with loads of exhaust putty, its too lose. My stock header has an external diametre of 38mm where the Scorpion is about 44mm... Obviously a massive difference. I went and bought a stock exhaust gasket hoping it would fit but that was too big for the link pipe so useless.. I thought the S and SM headers were the same size or am I mistaken ???? Is there a special shim for the Scorpion link pipe to stock header ??? Do I need to buy a scorpion header ???? AAAAAAAAAAAAAAAHHHHHHHHHHHHH Thanks in advance for any help you can give me.