I just bought a fronius pulse welder for welding steels and im struggling to get a nice sounding arc out of it. I am completely new to pulsed mig so please bare with me.. I have to have excessive arc length +4 or sometimes higher before i stop getting a crackle. the gas also changes it. if i use a 5 percent co2 to a 7 percent it changes a lot. I'm also using a 1mm solid steel wire and different brands of wire don't seem to alter this issue. do you guys know what's up because I'm told i am meant to have a negative arc of -1 or -2 in pulsed mig so its a really tight arc with nice bead appearances but i cant even get a neutral arc length without it producing a lot of spatter. can you guys help me please? ta