I’m setting up for natural gas for my new grill. Am I correct that any propane grill can be converted? How exactly do you convert the grill? Changing orifice size, etc. Main question is do I need to buy something from the grill manufacturer, or are these parts all available for any type grill? I’m sure people in this group have done it at some point in time. Also, if it matters, I’m at 7200 feet above sea level.