QTR-Quadtone RIP

I would like to create a couple new QTR profiles for use with a Epson
4000 loaded with Piezography K7 inks.  

The users guide suggests, "Curves in their editable form are stored as
.qidf files", and "...it's a good idea to select an existing profile
for a similar paper. You load it using the File/Open menu and navigate
to the appropriate subfolder of the Profiles folder mentioned above."

However, looking for the.qidf files for the 4000/K7 combination, I
find that there is only one to be found.  Clearly, QTR gives over 25
different profiles for the this printer/ink as I can select them to
print.  Why can't I find the .qidf files for them?  There are similar
papers to the ones I want to profile and i would use those profiles as
a place to start -- if I could find them.  Where do I find them (or
why are they not there), or how do I proceed?  Thanks.