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gofstbuick - Checked the EGR valve, and it's the original GM part. It also looks like the PCV is original (I'll replace the PCV, to be safe.)
I'm going to take it for another test today (I'm also going to change the oil right before I go)...I have almost no time left to get it to pass. Since I need to lower HC as much as possible, I went ahead and lowered FP to 43 (line off.)
So which would have lower HC readings: stock cap or breather on the valve cover (oil fill hole)?
Should I dump in a bottle (or 2, or 3) of some sort of alky (g2p, heet, etc)???
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