Straight argon clean clean clean. If it weeps clean again. Mick ordered me a little deal that sharpens the tungsten correct every time. I have actually welded with balled tungsten and with tapered. Each has its place even on aluminum. It’s not supposed to work but it did. I actually am using an air cooled 175 square wave Lincoln. Yep it’s Stone Age but it’s paid for.Use thin goat skin gloves. Also don’t minimize space issues.Practice hand setting and make sure you have complete access/angle clearance for you cup. Learned that the hard way too. Listen to what is being said about mismatch materials. Was welding up radiator bungs. Thick to thin and dissimilar alloys. Probably the hardest thing I’ve ever welded. It holds and still looks better than a bunch of fittings but it is no perfect stack of dimes. Usually a bunch of sbc /etc/abused junk early manifolds around at a swap meet for cheap. Learn on it and sell it once you’ve fixed it. Time is your friend. All the info here is spot on. But nothing replaces seat time. Also make sure your hood gives you good visual. A simple helmet change gave me the biggest improvement I’d had in years. Don’t sweat it. You’re good.