LT1 Optispark/timing issues

[gEtyOpAPiOn]

well when doing mechanic diagnostic work u always go from easy to hard ,so is there any spark,fuel?then go to firing order ,leakdown after that ,but if you are all over the place then it makes it harder

[barno68]

I am back in town now and am trying to find time to get back out to the garage. I just order a cable for AKM to check the codes and downloaded Freescan, so... that will be a few more days. To answer a few questions:
Grounding- I am using braided steel ground straps (1" wide) from the engine block to the frame and from the frame to the body. The battery negative is 2ga to the block. To be sure it is good I ran a jumper cable to the PCM/wiring harness (EZwiring) to check and also did and ohm check.
Spark- I am using a spark tester set at the electronic ignition gap and have good spark. However, as I plan to start the troubleshooting over again I will check all plugs in conjunction with a noid light for the injectors.
Air- looks good to me, but I am unsure where the idle screw should be set initially.
Fuel- as stated before I have good pressue, but have not yet checked flow. That is my next step after rechecking spark and injector signal.

As for a photo of the opti- it is back together so a pic will not show much.