Sorry but I never said I was ready. That is why I posted on here to get tips and pointers.

I will not attempt to weld the manifold until I am very comfortable.

I do clean the metal with an aluminum only stainless brush. I have never wiped the metal down with anything or the filler rod.

I have heard about preheating the metal in an oven, but I was told with this thin of an object, I shouldn't have to worry about preheating.

When I am welding is when I was having problems with the tungsten getting so hot. I think it was because it is to small for the amps I was using at the time.

Again, thank you for the pointers. I will post more pictures up later.
Scott