Well, I just received and installed the US Carburetion tri-fuel kit and everything works great! I had a spare 1/2" natural gas line that was originally used for a fireplace insert, removed and capped a few years ago. I added a quick disconnect to this line and ran a 12 ft hose to the generator. Tweaked the regulator with about 6kw applied and it is running smooth at max, with varying loads, and with eco mode. What a great investment! No more lugging gasoline around.