Um, well thanks Jon. I stated that I HAD to purchase a gauge to TEST the pressure. 4psi. I don't have a pin gauge set to check the valve seat dia. So I'll have to BUY that...
Your input is awesome to have but I feel you are frustrated or terse with me. Sorry, you can't hear tone or inflection on here.
I'll continue to do what I can with what I have and utilizing the info I glean from here.
Bob
You probably have drill bits in 32nd or 64th increments. That will suffice for estimating which size orifice you have.