Well, my '49 cab need A LOT of metal replaced. Door bottoms, inner & outer cowls, cab corners, etc. I have all the patch panels I need here already. I have a MIG welder also. I'm a proficient welder, but I've never done sheetmetal before. The lightest stuff I've ever welded is exhaust pipe. Is there an online resource or anything that gives the do's and don'ts of sheetmetal welding? Can anyone offer any advice on how not to screw this up?? Thanks in advance.