can't get machine to work on aluminum at home

[tictac]

I can't seem to get this 185 to work on aluminum at home. Machine works at auto repair garage fine. Using On same circuit at home as my Dynasty which worked fine. Same extension cord I used on Dynasty. Using a 220v Dryer circuit. Tried everlast pedal/switch, everlast torch with regular lens/gas lens . Using 100% argon , tried the meter at 5,10,15

The arc is all over the place, won't puddle. Nothing do do with cleaning material or balance /freq

Pictures attached.