.0300 mig tips and I think the one in currently is full length. I tried a few different lengths but all had the same results except one super short one had an issue with the flame backing up into the T even when I was igniting it at the bottom in the forge. So if it's running way to rich could that mean while in the forge it's putting out to much gas and it doesn't disperse as quickly and that's what's causing the flickering flame?
What should I try to get it to run leaner?
Also it is in fact hard firebrick, it was only $4/brick at tractor supply so for getting started it was to hard to turn down. I do have plans to eventually build a larger forge, possibly two burner, that will have IFB top, sides, and back with the bottom being hard firebrick with refractory cement mortar just so the bottom will hold up to metal hitting it and all better.