I am self-taught, which means I don't know much. I have a Hobart Handler 140 with 75/25 gas. I recently discovered that I was running the wire WAAAAAAAAAAAAAAAAAYYYY to fast. Slowed it down and things look much better. BUT, I still have hands that are NOT steady. I have to hold the gun with both hands (one out toward the tip) to even have a chance at going straight not shaking. Then, there is the whole vision thing. The auto-darkening helmet helps with starting position, but not so much following a line. I'm probably getting cataract surgery sooner than later so that might help. And, then the fact that I'll weld quite a bit for a week or two and then the welder sits for several months before I have something new to weld.
