Having issues with my new (used) truckmount. Kohler Command 20hp. The engine will run for a little bit, then flood out and shut off. In order to get it started back up, I have to pull the plugs and clear out the fuel, then start it back up. It will run for a minute or so and flood out again. The fuel line is tapped into the gas tank, it also has a fuel pump (turned off), a fuel regulator (settings 1-5, set at 1), and a fuel shut off. For some reason it is just getting way too much gas. When I pull the plugs, they're soaked, and tons of fuel sprays out when I crank it with the plugs out. Anyone got any ideas? I called a small engine place and they thought it was too much fuel pressure, which is why I turned the regulator down to 1. That didn't seem to help.