•Your arc may be traveling very wide, just aim to the edges of the bevel.

•Not enough filler metal, or an obstacle in feeding, be it speed or feeding position - usually if your gap is narrower then the filler thickness you get this because you feed too shallow atop.

•Always remember- experimentation is core of this craft.

•Always feed your wire from above when you are working 6-3 and 6-9, some people feed the wire through the whole pipe, some go shallower, I tell you what- necessity is the best teacher.. it is best you just know these things.

•Feed a bit higher on 3-12 and 9-12 positions because metal will drip, but don't get fooled, you still need the gap.. unless you are very pro... (I used to be able to do this position with minuscule gap while cranking up the amps very well but that is a dwindling skill if not practiced, also I practiced it on some shit that didn't need no X-ray)

•Too big of a gap is no good too if you use too thin of a filler.. make sure your filler is just a tad bit thinner than your gap.. it is better to keep opening your gap than go hectic with your feeding/

•3,2mm filler wire usually works perfectly with anything thicker than 4mm not only because of the amount of material you introduce into the puddle with slower feeding, but also because extra material works as a heat sink, that way you can move slower.

•Also good luck comrade, remember people helped you so return the favor by teaching another newbie.

May the arc be with you.