When playing with your bike like that the ECM will fire the injectors every time you turn the key on or turn the run switch on. Every time.
You will flood it and foul the plugs unless you RIDE the bike until warm. Buell stock programming has a very rich, very long warm-up enrichment cycle.
Idling in the garage doesn't count
I'll guess (because you are setting the idle manually) that your bike is a pre-'08? Too bad. the DDFI-3 ECM has a spark plug cleaning procedure thats pretty trick.