Tim, you do not need to Disable LTFT's or STFT's when using a WB. When you hit PE Mode they automatically 'turn off' (they lock).

Some Tuners will Disable LTFT's as the PCM will carry +LTFT's into PE Mode. Thats why we try to get the LTFT's as close to zero as possible. That avoids that problem.

Best thing is to log all of the same parameters as CALC.VE Table. It will be easy to tell if your fueling is off or its hopefully perfect!