QTR-Quadtone RIP

Hi everyone

Like many I am trying to create digital negatives using QTR on a 3800.
Well I am 22 test prints down the road and not able to get the control
I need. I get either print highlights good and blocked up shadows or
vise versa. Using the usual tools (gamma, shadow, highlight)only make
it worse.
Curves have also been unsuccessful using the method described in Ron
Reeder's - which is a GREAT resource I have just not been successful.

so I went to try and linearize. 

I read 21 steps with an xrite 810. and entered those readings into the
linearization line. Still no success. It ended up blocking up the
highlights and shadows with thinning out of the midtones.

Yet I feel like if I knew how to control the values in the linearize
line that would yield ultimate control of the ink densities.

So here are my questions - 

1. I have so many negatives now that I can read the value I want via
UV so I know exactly what the negative value should be for each
printed value.
---Is there a way to use linearize to get a specific ink output for
each value? In other words - I I know that I need UV of 1.5 for a 50%
grey - can I get use a value in linear to lay down ink for 1.5 at 50%?

2. I entered in the values as read by reflection densitometer into the
linearize curve - but the output was no where near linear - can
someone explain what linearize is really doing so maybe I can figure
out what direction to tweak the values to make the curve move correctly.

thank you for any help
Sean