hi cliff, i'm going to rebuild a 1976 q-jet 17056263 for my '67 gto. it's all apart except for throttle valves & secondary air plate. it's cleaned up too. my question is, i put leak tek on the plugs underneath the carb, and applied high pressure air to the primary & secondary jet openings. not one bubble of air. should i leave these plugs alone.(front & rear)