Hi Cliff, i am having some trouble with a carb, the secondaries will not close all the way sometimes resulting in a very fast idle. The carb is on a dirt track car. I bought the parts and got the tune up from you, and the carb runs great except for this issue. i did not rebush the base plate. this is second plate i have tried. will the primary bushings also work in the secondaries? if so i will order a bushing kit. thanks for the help Ed