floor pans
I finally went down and used the cheap HF flux core machine my dad had. He couldn't get his to work but he had never use a wire machine before. The main problem was the pinch roller on the wire feed was not tight enough and it would not feed at a consistent speed. Once I tightened that up all I had to do was play with the wire speed a bit. A shot of your machine settings could be helpful. For the 3/16 metal I was playing on I was on High with wire speed at 5 1/2. Don't move too fast and work the puddle. For the thin stuff you will probably be on low setting and wire speed 3 ish or so and may have to stitch weld. In other words just a little spot at a time.