QTR-Quadtone RIP

Hi... can't find a way around this issue, and hoping someone here can help.

The problem: PS CS6 filters out the Gray Gamma 2.2 icc profile as a print option. 

The issue:
Piezography inks -require- that the printer setting be 1) Photoshop manages colors and 2) profile - gray gamma 2.2. (This matches the document itself, and sends it thru unchanged.)

I've tried hacking into the profile and changing the code from mntr to prtr, but that didn't work.

Does anyone have an -output- gray gamma 2.2 profile that CS6 will include in its list, or any other solution to this issue? 

As it stands now, one cannot follow the Piezography workflow instructions and print from PS CS 6.