According to my measurements, I have about a 320 ish cu/in forge, the front opening is 5x7. and that was before putting in Kast 30, so I think it's not a size issure,
I'll give your suggestions a try Mikey, stuff the portal pipe and get my bricks sitting better, see if that changes anything.
I'm not 100% sure on my regulator, but according to my gauge I am getting around 20 psi out of it, that seems like plenty, yea?
I'll also tweak my burner placement, see if I can just get the max outta it.