Funny you mention this. I tried using the KB after reading your post on blackwood with the XFG. I lap in the low 1'35" with a momo wheel (can't justify the G25) and I never got past turn 5 (semi sharp left after the long straight) with the KB. I'd always oversteer and bomb. I'm impressed you're driving with the jeys.
By the way ... unrelated: I'm PVoyager from langstas ... Good to see you here.