try upping the number of photons fir the FG, also try toning the HDR image down a tough using the Colour gain.
Incidentaly, the Kitchen HDR was what I used for my gibson Les Paul, toned right down and then added some lights to get the lighting that I was after, so the HDR was used to have some nice reflections in it not really as the light source.
Cheers
Steve
"No pressure, no diamonds" Thomas Carlyle