Stalling off Idle (am I lean or rich?)

[Bster13]

Bike (00' SV650) never seemed to be jetted correctly, with the rear cylinder running way rich. Bike would fire on both cylinders until 5kRPM with a loud backfire (unburnt fuel igniting I suppose) and then u'd get two cylinders at 5k+ RPM. Also when moving off idle normally, quickly, anything but moving very slowly, the bike stalls.

-Installed FactoryPro Race kit with BMC Pod Filters for Full exhaust.
-Bike now runs on both cylinders throughout rev range but still stalls off Idle....u can feel it starting to die at that position just off idle as u slow roll on, but if u go slowly enough it gets through that spot and runs fine.

Am I lean or rich? (I would think lean, right?) How do I correct this?

Thanks,

Bryce