The return spring on my Weber 34ICH carb is broken - I discovered that only the extra return spring I had to fit for Mudmaster, plus the spring on the linkage, are causing the throttle to close. Does anyone know where I can get a replacement? (And I'm assuming that replacing it is just a matter of unbolting the crank; let me know if it ain't so!) Replacing the whole carb for the same of a spring would be really daft, but nobody seems to sell just the spring!