OK had an out fire today the barrel was out of coal my bad
but it's been running 6 o'clock it is now 8:30 that's about 2 1/2 hours. My baro's about 30" above the exhaust and my manometer hole is about 8" below baro. I still get .01 with baro 1/3 open or with a cap on. It doesn't seem to matter if it's opened or closed. The baro is opened when running and almost closed on idle. Just a side note I purchased a bag of match light charcoal for $12.00 threw in about 6 bricks waited 10 minutes as per directions threw a couple hand fulls of coal turned the air on with no feed 1/2 hour later nice fire
can't be any easier than that. Save your money on the coal mice and buy a bag of match lite charcoal.