LT1 Optispark/timing issues

[barno68]

Using a spark tester- all plugs have spark when turning over.
Using a noid light- all injectors are firing. Only odd thing was that as I was going through them the first two I did were 2 & 4, which were fine. After them none of the others were working. I was using a remote starter to turn the engine over and decided to cycle the ignition and then they all worked fine. Not sure it that is an issue or a design feature. I checked the grounds and everything looks good.
Pulled four of the plugs and they smell a bit of fuel (not wet), not sure what to make of that. The plugs are autolite platinums gapped at .045. Also verified the firing order again.



I am still not sure where the throttle (idle screw) should be set. It is currently in the position (about 1/8" of threads protruding from throttle body) that it was when I got the engine before rebuilding. The butterfly valves look completely closed.

Any other thoughts?