Okay as default both smoke stacks set to smoke alternately so attempted to change argg!
I soon found out that you must not load engine module first and then set a new engine ID# and set smoke stacks using aux1 then 9 key.
apparently the instruction manual not exact as this is how I was able to do it.
I slid run switch to program pushed engine soft key entered the ID # I wanted then I pushed aux1 key and then the # 9 key and then pushed set engine responded accordingly then slid switch to run and then loaded the Big Boy module.
in reading the instruction booklet they mention legacy or in command mode so are they now calling cab-1 as in conventional being legacy? and command mode is the gain access to all cool features using cab-2?
so new question! do I have to revert the Big Boy back to cab-1 status to set default smoke feature as delivered from Lionel now?
thanks for clarity on this.