Also, you probably should have left this posted in the Pump Tech forum.
My problem was that in the sniper manuel it says that the sweet spot for the reg is around 230. With the IVG turned around 3 turns form flush I was shooting at 250 fps. So i was having to turn up the reg and turning the IVG to just under 4 turns to get closer to 280.
From my understanding the Check It high pressure valve increase the air flow while keeping the psi low. This in combination with the spring allow me to have my reg at 240 and the IYG at 1 turn in from flush and shooting at 280 fps.