Yeah. Flux core gonna spatter. I've been judicious with the heat setting because I'm used to the 220 AC stick welder, which blows holes in anything thinner than Abrams tank armor plate. This thing ain't like that. Cranked it up to "D" and made everything cherry red and melty.
Luckily, I got a grinder for Christmas (and Bondo).
Here's where we're at now.