How to get more brake pressure?

[Painter D]

My problem is that there doesn't seem to be enough pressure to the front (disks). What I mean is the truck will stop "ok" but not as good as I think it should. In other words I hope some kid never runs out in front of me. Anyways no matter what speed I am at or how hard I push the pedal the front wheels won't lock up. Shouldn't they lock up at some point? Is there any tricks to achieve more pressure?

It's got new rotors, new calipers, new disk,drum prop. valve, new hoses, new MC, New booster ,and a new adj. proportioning valve on the rear line. I've bled them several times and the pushrod is the propper length.

I've been driving the truck like this for 2 years without issue, I'm just wanting a little more pressure up front. Any suggestions?