A manometer or draft gauge is really required to tell what is going on. I fooled myself several times into thinking that I had enough draft with the weight selection on the baro... turned out that i was way off.
Either find a friend who has a draft gauge and get him over to look at the blue flames
, or look to buy one of the cheap manometers found frequently on ebay ( a Dwyer MK II model 25 can be found for under $25 with shipping on occasion). This is cheap insurance that will improve the efficiency of how you run the stove.