Thanks for the advice everyone.
Had to take a break for a few days to let my mouth heal. Today I had a real nice smoke with good 'ol OGS.
I think part of my problem has definitely been how I light it. I was drawing too hard, causing a cone to form down the middle and not fully lighting everything. So, I've been holding the flame a bit above the surface and drawing lightly, seems to get more of the top lit.
Another problem has probably been trying too many tobaccos. They all seem to smoke differently, so I think I'll just stick with OGS until I have it mastered. It tastes great, last forever (takes over an hour to smoke this group 3 bowl), and burns well.