No spark on LT1 installation

[Gregetter]

Hi, Newbie, here.
I just installed my MS3X driving a 96 LT1. I'm trying to set it up as ignition only for the time being.
I'm also switching from a single coil to a COP system using LS1 coils.
I've modified the harness going to the Optispark by adding pull up resistors and supplying 5V reference from the MS3. (Section 6.39 of the manual) I've gone back and verified that power and ground are where they should be.
I've adjusted R56 on the MS3 board to the max (2.3v) per the instructions in section5.2.4 of the MS3 manual.
I've adjusted R11 on the X board to 2.5v and jumppered JP7 per instructions in section 5.2.14.2 of the X manual.
After installing I went to the test section of TunerStudio and made sure all of the coils were firing.
I also determined where TDC on #1 was and installed timing tape and a pointer.
I've disabled the fuel pump.
So far so good.
Then, I tried motoring the starter but get no spark--at all.
Went back and verified wiring to the Optispark is good.
In tunerstudio, I've disabled anything that has to do with fuel .
In the spark section of TS I have the following settings
Spark Mode--Optispark
Trigger angle /offset --0
Skip Pulses --4
Rising edge
Going High
Coil on plug
MS3x spark
MS3X Cam in
Flip polarity --Normal

Datalog during start attempt shows only MAP.

Can anyone offer help or suggestion?
Thanks