Hello again smyths, when you talk about the numbers, they are great starting places and points of reference for future use,, as long as you are talking about using the same machine and all of the same peripherals. You talked about the sound that the arc made and I would agree that I like the hiss sound better, also consider the way that the puddle looks and try to keep a mental picture of this stored away in the old brain. The only way that you can truly use numbers to describe welding parameters is if you have calibrated electrical measuring equipment to verify them. When you go from one machine to the next, numbers are just reasonable starting places to work from. Personally I would avoid the .023 wire because it is more likely to give you feeding problems. You may want to consider using some form of a heat sink while you are making the long welded seams, this will help to minimize the distortion that will occur, a couple of copper or aluminum bars clamped to the outside of the corners should help. I would suspect that 19 to 20 volts might be a little closer to home for a setting, however, run some test pieces to verify for yourself. Best of luck and Regards, aevald