I have been using WAY too much heat in the past. This was done at 40amps and no sugaring on the inside save for a few spots where i slowed down and didn't back off the pedal.
I am going to be giving solar flux a try when i start to weld the actual exhaust together.
The plan for the weekend though is to get the motor back out so I can box up the turbo's to send up to Husam.