Also try to slide, shimmy, wiggle your way to get between the superheat or econimizer panels. Wedged between them, tig welding with one hand, feeding wire with the other or buddy welder feeding it. Flyash, dirt, grime, dust from head to toe. 110 F in the penthouse, humidity about the same as temp. Getting zapped everytime you touch rod, wire or tungsten. 100% RT. Good times...