I would like to know if anyone ran into this issue; I don't seem to be able to access the "WHITE PAINT R & B" settings.

Edited: Just called JVC - the WB switch has to be in A or B but not in PRST.
Hence another question:

If I use one of Tim's settings, as an example, it is important to note WHEN one has to white balance because if the white balance is performed AFTER the settings are applied, the settings change. So, WB first, adjust WHITE PAINT second?

Exactly Jiri.

Set the scene file, then white balance, then adjust whitepaint as needed. If you white balance again you'll need to adjust whitepaint again because once you do the whitebalance proceedure it automatically puts the whitepaint off.

S.Noe