Hello, noob here! Any thoughts on amperage settings for welding 4130 tube, coped joints, (roll cage) .083 wall cage to .056 wall support. Using Diversion 180, ER70-S6, E-3 tungsten. Having hell with blowing holes in either the thinner-wall 1-1/2" .056, or the edges of the 1-5/8" .083, whic...