Help with fuel injection issue

Here is some good reading for you. The first one talks about a engine miss right after a hit start.
Hard to start after engine is warm - Jeep Wrangler Forum

Second one talks about the check valve in the fuel pump I was talking about and the injectors and fuel regulator.
Which looks like I was some what wrong on. I for got the fuel regulator is on top of the fuel pump. Lol

Long Cranking Times on 4.0 - Jeep Wrangler Forum

Hopefully this helps you figure figure what's wrong with your jeep