Robert,
One thing I enjoy about your posts is that you take time to mention the details of setup, like here showing that when you changed back to the -7 wire you took time to run a test panel to "dial in" the welder. My "slam bam" approach is to install the spool, get it into the gun, start welding and adjust as I go which means the first few spots are not near as good, and often I'm finishing by the time I've got the welder "dialed in". You're posts are great teaching posts, and I thank you because I am one who enjoys the ever continuing learning process and improving techniques. The day that I think I know everything is the day I'd better find the dunce hat! Thanks for the lesson on perfection in process.