I have a Clark C500 that won't start. If I turn the propane tank on you can hear and smell propane but never seems to stop. I think it's flooding because if I shut the tank off and let it sit a couple of minutes it will sometimes start and run for 5-10 sec. Is it the regulator that prevents propane for entering the carb or the diaphragm on the carb. The carb is a J&S model 55 and I'm assuming the regulator is also a J&S but has no #'s. Are there rebuild kits for these or do you have to buy the whole regulator or carb? I know the solenoid is good before the regulator because I hear it click on and off with the ignition. I also noticed if I leave the tank on it will freeze up the carb. Any suggestions? Thanks