Hi Silverado
I saw the welds after they were ground down from the pics you posted...I would get that bottle of gas...that will help a ton...also make sure to re-adjust the settings listed on the welder itself.
What I do when I weld sheetmetal...tack tack tack tack...I dont every run a full bead. Also if you tilt your head on the welder so your approach is about 45 degrees from the metal surface that will let you fill those holes...
I only run a full bead on thicker metal like 1/4" and above.
Also make sure when you run the welder make sure the curcuit has nothing else running off of it. This I have found can cause issues also. I had a refrigerator running once and it cut in and my welder suddenly went away.
The sounds of a good weld are music to your ears for sure...I love to weld...would rather weld than wrench anyday of the week..
Good luck and keep us in the loop.
MikeC