For starters you are using 4T. Put it in 2T. It won't cut if it is in 4T, if you keep the trigger held down. Not sure why it went into duty cycle unless you were keeping the pilot arc on for extended time. You are under pressure though on your cutting psi, which should be about 70 for CUTTING, and probably higher if static. What size compressor are you using? (cfm/ tank size). Is your torch in the negative?
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