I got the disc as a promo from a Weiler rep sorry the label has come off. A quick search on the web gave several options from most of the major manufacturers. Amazon has a few options, but I can't vouch for their quality. Most welding supply stores carry them. The settings I use for that material thickness are 110-120 on the frequency, 140-150 amps (foot control), 65-70 EN on the balance, 15-17 cfh argon with a #5 standard cup and 3/32 2% lanth tungsten. Probably not to different from your settings. One last thought, I ran into some bad wire the other day. Turns out it was old and oxidized throughout the wire. Got some fresh and everything cleared up. When you find the solution let us know.