My lift sat for 2 months. Since then it hasn't run rite or at all. Ive replaced plugs,wires, distributor cap. "Point and plugs gapped" Replaced regulator, and solenoid. Took off and cleaned carb. Just recently I finally got it running but its rough. I gotta play with the idle screw and gas pedal. It wont idle or run for long. Now this is my first forklift and propane as a fuel. My questions are, what could be wrong? Is there a governor to adjust? Timing cant be off rite? It ran great till it sat. Do these models have a fuel filter? What other adjustments can be done other then the idle air screw on the carb? Bought this machine to build my garage and it hasn't run since day one.