Thanks runningman i do indeed have zirconiated tungstens. Here in South Africa these machines arent very common and there are even less people welding thin ally. The local lincoln electric agent has actually got a box of 0.40(1mm) zirconiated electrodes but unfortunately they dont have collets and collet bodies and they havent been able to find any for the last 3 months.(as if they actually looked)

So what i am really trying to say is will a thinner electrode help with welding the thin aluminium.(sorry aluminum)