Digital BW, The Print

I've been asking about this in the QuadtoneRIP group but no answers. :-(

I'm trying to get a good profile for Harman Gloss FB Al on my Epson 4800.  I have noticed some odd things about existing profiles.

1 (major!):  Existing profiles for some printers seem to have density values, in ascending order, in the LINEARIZE= line (see for example the Epson 4000 or 2200 profiles).  But for the 4800-7800-9600 all existing profiles seem to have Lab values, in descending order, in the LINEARIZE= line.

Which is correct?  Does QTR automatically detect either?  SpyderPrint wants to emit density values when in "QTR" output mode.

2: I can't find any good documentation of what the BOOST_K option does or when or whether to use it.  I notice I'm getting maximum densities of about 2 while others report Dmax for this paper around 2.3.   I have DEFAULT_INK_LIMIT set to 60 which is if anything generous given the way the original calibration page printed.  Do I need to use a higher LIMIT_K or use BOOST_K to get the kind of Dmax others are seeing?

3: The 4800-7800-9600 profiles don't seem to use UC_NEUTRALIZER=yes.  Other profiles for other printers using Ultrachrome inks do so.  Is there a reason?

Thanks in advance to anyone who will tackle any of these.  The first one is the most baffling to me. :-/

Thor