Went over to Muskegon this week and got the CNG I needed at Lake Welding Supply Co. Those guys are a pleasure to deal with. Bob over there told me that they have stores in Ferrysburg, Holland, And Manistee, MI They have the gas or can get it from the main store in Muskegon on short notice. He also told me that they supply the Irish Boat Shop in Charlevoix. I did try some of the sources in Ohio that Loren mentioned but they only did motor vehicles. Next time I will try some more of the sources you mentioned although the scenery and touring in western Mi. is great so we always make a trip of it. Stayed 4 days .