QTR-Quadtone RIP

I have created a QTR profile for my R800 using photo black ink that 
I am really pleased with.  One of its features is that I created an 
inverted curve for the gloss optimizer, so that in areas of the 
photo that are pure white, gloss optimizer is applied, and in areas 
of deep blacks, no gloss optimizer is applied. (By not applying 
gloss optimizer to dark areas, I am able to use more black ink and 
achieve a higher dmax without ink pooling.)

One thing I've found, however, is that QTR seems to be hard-coded 
such that in areas of pure white in the photo, no ink is applied... 
regardless of what my gloss optimizer curve says. I am seeing a 
gloss differential in pure white areas, which goes away when I 
adjust the levels of the image so that the white point output is set 
to 254.

My workaround solution is to create a photoshop action that changes 
the lightness of any pixes with value 255 to value 254. This creates 
a nearly imperceptible change in the brightness of the lightest 
areas of the print.

My question is:  Has anyone found a way to force QTR to print gloss 
optimizer in an area of pure white?  

Thanks!
Matt