I recently got this newly acquired stove running and replaced the fill cap and tank seals, nrv, and pump leather. The stove fires right up after the usual pre-heat but never gets a blue flame and it appears as though I have something going on insofar as one section of the flame is larger than the rest or more appears to have more yellow in the flame at times. I suspect that the slightly enlarged intake holes in the burner bell from a previous removal attempt and the slight warpage of the bell (midsection of the bell) may be the culprit there but am unsure. I have tried shimming the bell higher and it gets worse. I have also tried rotating the flame spreader in an attempt to make the location of the excessive flame move (checking flame spreader) and that did not help. When rotating the burner bell the flame in question seems to follow the bell. I can't seem to locate another burner bell to try on the stove to rule it out. I tried to check the lipstick burner with a prickler for excessive wear only to discover that all of my prickers were undersized when measured. The lipstick burner has some old metal screen in it and I'm eventually going to replace it with some new screen. The following pictures represent 2-7 pumps after warming it up. The flame pattern does settle down with a pot on it to an almost acceptable level but there is a evident area of about 25% of the flame that is leaving heavy soot all over the pot. Lastly, the stove does not "roar".