I own wreck-a-mended auto body & boat repair. We repair autos & fiberglass boats. I'm now getting calls to do aluminum. I have not welded alum. But do own a Lincoln mig 350 mp.I have toyed with it. I'm told I must have a tig welder also. I've been in the business for over 35 years . I'm also told alum welding is self taught, is this true . since I'm having problems finding any schools that teach it. I am ordering your dvds. Is here enough information for me and my son to get started. What tig welder do YOU prefer. Thank you for your time in this.