I have a Hobart 110 volt mig that I bought many years back. Never used enough to get good at it. Dug it out and been using it on some sheet metal repair on a '65 Mustang. Still not realy getting the hang of it. In talking to a few friends who have more experience than I do and figured out that mine has a non adjustable gas regulator and theres all have an adjustable regulator. Will and adjustable regulator be worth the cost?