Finally got my wire feed working! I'm a total beginner. I'm using flux core 0.8 wire on thin sheet metal, hoping to use the 'stitching' method, but mostly I'm messing around getting used to the settings a little. A big problem I'm having, especially with tacs, or very short runs, is at the end I get a pronounced void/crater. It can be pretty deep. Seems to consistently happen when I stop the weld. Any idea why? Here's some examples: (Please excuse the big embarrassing hole!) Welder was set to the minimum settings.