Really need help with the last small issue with my 90

[Corvette95]

OK, so this morning...I do have video of fuel pressure but that is not the issue. Today I started it while recording with DataCat. While Tech1A shows no codes, no RPM drop etc. All HELL breaks loose on first start...I am not sure I can post the video file from the DataCat, but I can post screen shots. First one is from the first start of the day..looks at all the data drops and errors, even no rpms...then look at longer view with multiple restarts, after first start, no errors, no crazy readings. I am not sure to look at crank sensor, cam sensor, DIS or ECM...gotta think about this???