The only thing that I can suggest is what was suggested to me by a mechanic up here in Ontario. First; does your car have a catalytic converter? If the answer is yes, when you go to do your smog test have the bug
thoroughly warmed up. Catalytic converters are not at their best until the honeycomb is damned near red hot. It is that action which cooks out the pollutants. Getting into the car and driving around the corner to the test facility or leaving it there until it cools down and then just driving it into the shop nearly guarantees a failure. What you really need is legislators who understand the limitations that come with collector cars. Up here and in many jurisdictions these oldsters do not have to pass any smog test - they wouldn't have a prayer to begin with and with them being driven for very limited durations they are not the source of our collective pollution problems. While I was in Arizona last year, their state government came to this very conclusion much to the relief of the many owners of classic cars in that beautiful part of the continent. Dan (MY72BUG) in Goderich, Ont.
I'd rather have a partial bottle in front of me than a partial frontal lobotomy.