need help airing up

[jott_06]

I just bought a 1997 sonoma with full air ride suspension. It has air ride technologies lower control arms, bags, and bag brackets in the front. and a mono leaf setup with airlift 2600 bags and a monster c-notch in the rear. It has all 1/2 inch valves and 3/8 line. The problem i'm having is that i can pump the rear all of the way up with about 60 psi in the tank but it takes around 140 to get the front clear up. If you try to pop the front up with anything less you can only get it a few inches off the ground. What can i do to speed up the front of my air ride. It also takes my viar 450c compressor close to five minutes to fill the 5 gallon tank with enough psi to lift the front