Oh man, tell me about it. I spent an hour yesterday tweaking the alignment on a simple lap joint, using every clamp I own. The whole time I'm nudging it half a millimeter, checking with a square, nudging it back. Then finally, when it's perfect, I zip the weld bead across in like ten seconds. It's almost insulting how much prep time vanishes into that one little spark. Makes you wonder if we're all just professional fitters who weld occasionally.