Did it have a mixture control originally? Is it supposed to have a mixture control?
I am hoping a true expert, like John Cooper, picks these questions and answers them, but I am pretty sure the answer to both questions is YES. Eliacim is correct. There is no formal justification for removing the mixture control, although it was a very common practice. A correctly set up Stromberg is quite good at maintaining the correct mixture over a wide range of conditions. The recommendation not to lean below 5000 feet is based on the fact that it is not necessary, not some limitation of the mixture control. If your mixture control has been wired rich for 3 years or so it is unlikely it will work correctly if you just hook it up. The system relies on subtle pressure changes. Moving that control that has sat dormant al those years will likely break the shaft seal rendering the control ineffective. John Cooper Skyport Services 4996 Delaware Tnpk Rensselaerville, NY 12147 518 797-3064 www.skyportservices.net _____
