I think I was successful with my butt welding. Took me a long time but seems to have turned out decent. I give myself a B-

. My patch was crowning for sure. I used a stud welder (dent puller) to heat small spots, hammered then cooled and I was pretty successful at flattening it out. I think the only thing that I had some trouble with was getting the welds to go 100% through to the other side. You can see there is a slight line on the backside in about 25% of my welds. I could touch those up but I really don’t want to add anymore heat to this panel. I’m hoping epoxy primer and filler will do the trick and I won’t see any cracking down the road. For those attempting this my main advice is to watch that YouTube video, get yourself a chair and beverage of choice, do not skip plannishing each and every dot, grind down your welds with a cutting wheel as you go and go super slow, checking your work as you go. Thanks all for the help.