The old foreman's shim trick that made me redo my nozzle alignment
My foreman in Gary watched me bolt up a header and just said 'you're fighting the gap instead of reading it,' so I pulled everything apart and used his tapered shim method to set the gap at 1/16 before welding, and I haven't had a single leaky seam since, anyone else got a two-word tip that changed their fit-up?