LNC-2000 Retard Pid

Trying to create a pid for the amount of timing being pulled from the LNC-2000.

According to the lnc-2000 manual the signal is a linear voltage from 0.2 to 4.8
Timing Retard 0-15 degrees

I have setup the following and it's close to what I think it should be doing seeing as we have 4 degrees of retard set and the highest point it hits is 4.

*CLC-00-2052
V 0.2 4.8 .2 "{EXT.AD1}"
Deg 0 15 .2 "{EXT.AD1}/2*5"

Is that correct?

Annoyingly someone from LPE posted that it's a 0v-3v. (this is correct. I was reading the wrong wire)
http://ls1tech.com/forums/nitrous-ox...l#post18462221

BUT, the device is constantly outputting 0.2v when the controller is on so I think he is talkin about a different device

So it looks like I might be pulling more timing out than I thought from the lnc, we did up the nitrous shot to 250.

I've come up with the following now as it's supposed to be 0.2v for every degree, but even this doesn't seem right as it's always running near on 0.2v which means it's constantly pulling 1 degree of timing.

*CLC-00-2052
V 0.2 3 .2 "{EXT.AD1}"
Deg 0 15 .2 "{EXT.AD1}/0.2"