Starting in about 1974 plastic limiter caps were put on idle adjustment screws. We would just break off the little tab and adjust the carb. Starting in the 1979 model year a steel plug was required over the idle mixture screws. Usually to get the plug out part of the carb casting had to be broken away by design. I did it a couple of times, the result was only about the first 1/4 turn out would help then turning the screw more wouldn't make the mixture any richer. You have to drill out th hole to get more fuel. Jay
Ok, that's why I don't have the metal caps because mine is a '78 and the Monojets in '79 had them. But all the reference books seem to think '78s have them, maybe because they were introduced in '78 on '79 models?
Say wait, I need to disassemble the carb to drill out the internal hole for the idle mixture? I thought the drilling was just for the metal cap?
