Digital BW, The Print

I've been searching the archives looking for answers to my questions 
and as yet haven't found anything I could grasp or that seemed 
relevant, mostly that I could grasp, I must tell everyone one up 
front that although not a complete novice a lot of this techno speak 
regarding QTR goes right over my head. To start you should probably 
know that I'm working on a PC,have an Eye 1 spectrophotometer, Epson 
7600, running UC inks with matte black, have downloaded and installed 
the latest versions of QTR and QTR gui. I'm trying to do the 
lineariztion using Tom Moores TutorialV1. After printing the Ink 
Patern Page his instructions say to measure (which ever way you like, 
hardware or by eye) the patches and determine where the ink density 
levels off and use this amount as an ink limit to create a new set of 
patches. The problem I'm running into is that every different ink 
step wedge levels off at a different point so I don't know what to 
use as a limit amount. Black actually is most dense at 55 (and 
actually gets lighter from 75 to 100!) , cyan at 95, magenta at 100, 
yellow at 80, light cyan at 100, light magenta at 90 and light black 
at 90. I've done nozzle checks and they're all good. I've printed the 
test wedges three times (all numbers are different for each one when 
I measure with the Eye 1 but a similar pattern emerges) and I've 
taken out and shaken the ink cartridges. The other thing that is 
making me scratch my head is that in his appendix 3 there's 
information about using the Eye 1 to calibrate the final 
linearization (I hope to get to this point someday :~) ) and it talks 
about four reference files, QTR-21-gray etc. I can't find these files 
anywhere nor can I find the four corresponding TIFF files for 
printing that are mentioned. I know that if I can get help for this 
it'll be here so, before I tear out the little remaining hair I have 
I'd sure like to hear some ideas. Thanks a heap in advance. Sorry 
this got so wordy but I've tried to anticipate questions about my 
circumstances and methodology.

Leon