Digital BW, The Print

I've installed the UltraTone carts in my 2200 yesterday,
and after letting it sit for ~ 5 hours and doing about
10 cleaning cycles, I started getting good nozzle checks.

I've installed Carl's 2200 UT curves after commenting 
out the linearization data.

Now, when I print 21Step.tif, using any of the profiles
that mention toner-curve.raw, the output alternates between
gray steps and varying levels of blue toner rather than being
a smooth ramp. (When I print using the warm curve, which 
does not use toner-curve.raw, the output is fine.)

Is this the result of the Mac/IBM bit-order problem in
toner-curve.raw mentioned in other posts? If so, how do I
correct that file? The instructions I found were a little
cryptic, and had to do with opening the gray16 file, not 
the toner-curve.raw file. That confuses me. What program are
you using to do this correction?

And once corrected, do I need to reprocess the .txt files 
and reinstall the curves?

Thanks,
David