Denny: The guage is a Mac Tool brand. Guage on left reads incoming pressure with a regulator underneath it. Guage on right is reading pressure back from the cylinder. I don't know about the percentage. Not doing this before, and not having the instructions that came with the guage I can't tell ya much. I assume I'll have a little bit of air in crank case by the gap of the rings, just a pinch. The air doesn't sound like it's gushing in there, you can hear a little though.

Hi MainCap: Yes, the cylinders will hold pressure for a moment and leak down really slow. I assume a cylinder isn't 100% sealable due to the ring gaps, (except maybe if you use gapless rings), so I assume the guage from cylinder will slowly drop once I shut off the air supply due to the gaps. (this set of rings only have 85 miles on them).

It1s10: We have an open system, no pvc valve. That would leave rings. Food for thought-if I'm sucking enough oil into the cylinders, overwhelming the rings, could cylinder pressure force the blow by by the rings thus letting it come out the breather? If I didn't have so much oil in the cylinders, right away I would guess rings with smoke out the breather cap in excess. (just a guess).

One thing I forgot to mention on the compression test. I went ahead and added oil to the cylinders, (as if I need more in there!) and got 0 more pressure on the guage. Again though, with so much oil it could be possible to get false readings as you say.
I hope it would be as easy as the intake. If that's not it, it puts me back to the rings and tear down. All for now.