I live and sail in Saugatuck, Michigan, which is only 2-1/2 hours from Chicago. Lake Welding, the welding supply company, where I got my CNG gas tank exchanges, was recently sold and the new owners dropped the CNG exchange business (the previous owner was a sailor and handled CNG gas as a service to us Michigan sailors). It seems that all the marinas in Michigan got their CNG gas from Lake Welding in the past. Now, I can't find CNG gas anywhere. Any other S2 sailors with this problem? And, how have you solved it? I travel to Chicago often and could get the gas there if there isn't a place in Michigan.