I have turned the screws on both sides from the stop out 1 1/2 turns. I put the vacuum gauge on it and got it up to 16. Then started to stink again out the back. If I leave it at the 1 1/2 turns it runs better. When I put it in gear I have to keep tapping on the peddle to keep it running.I have a 1" insert under the carb with a gasket under, and above the insert. I just changed all of the plugs. It starts right away. It just does not want to idle well in park, nor in Drive with the Brake on. I have checked for leaks with the propane, and there was no increase in rpms. Running the vacuum gauge off the intake I get a steady 18 How can I get this set up?? Thanks..