QTR-Quadtone RIP

I think your problem with neutrality is your choice of 2 cool curves 
rather than 1 warm and 1 cool.  This will result in a much more 
neutral tonal range.

The bronzing is not QTR's fault.  It is ink used by the 2200, the 
way the paper absorbs it and the way the 2200 puts ink onto the 
paper.  As far as I know, the only way to deal with bronzing is to 
apply a coating that will even out the reflectance values of the 
paper or simply change to a more matte surface paper.

Best regards,
Randy