Ok so i had a decent size job (for me anyway) today, the Esab was running perfectly, lovely sizzle sound and perfect welds every time, until... After about 25 1" fillets, it started to sound odd, very quiet and poppy again So i took a coffee break, checked the gas flow - ok, checked wire feed - ok, reached for the camera. Three videos here - very poor quality i'm afraid, its hard to video a mig weld. The first two show the issue i think, in the third the trouble clears itself towards the end?? So, when it goes wrong it was like trying to weld with a magnesium flare running on pure oxygen! A really bright flame, poor or non existent weld, sometimes followed by a tip-weld. I looked at the display and i'm damn sure it said 28v and 180A which is odd on 160A machine? The voltage was definitely way high. Then, after the 3rd video it all cleared and normality was resumed, I even finished the job ok! Now, I'm sure its NOT the machine, the wire is quality stuff, could this be crap BOC gas? Flow rate was 8lpm, wire is 0.8mm.