Adam, Hank, anyone can you back this up? I usually tack it on with about 4-6 spaced out 1/4" tacks to seat it and hold it on the pipe where I want it, then go to town. Tig on about 60amps or so for depending on the tubing dia… filler rod welds, not fusion. I have yet to warp a v-band or a normal 3-4 bolt flange either. I also go slow and only do a few inches at a time becasue I dont have 3 hands. lol