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Do you have a temp gun? Although you will have a lot going on at start-up, it might be a good idea to monitor the tube and flange temp. If it starts to go high, just shut it down and give it a chance to cool.





That's not going to help much in that its not calibrated for the bright finish. So you'll be off between 150f and 300f to start. Secondly, by the time you see over 1100f it would be too late to correct it.....

If you refuse to take the headers off your best bet would be to aim some heavy duty shop fans directly at the headers to keep them as cool as possible.