Garland 3-13 H

[canderson]

I had my son blow smoke through the pieces, all holes are open.

[fixbear]

You still should clean out each hole to insure even flame tips.  They tend to get carbon and rust scale inside that will make them uneven. Any reduced flow will make back pressure to the carburetor and can make a back flow that is dangerous.  The burner and metering nozzle are a precise match.  So much so that at different altitudes some burners have to be tweaked.

[canderson]

OK, that makes sense. will do.