hydro-boost troubleshooting help

[mrhino]

I have a 88 GMC 3500 350 tbi, with hydro boost. two problems iv noticed 1. the brake pedal is very firm, IM mean you can stop the truck almost like a normal operating brake system, but it takes extra muscle to do it. 2. the steering takes absolultly no effort at all, very very easy to steer, abnormal easy. I just put on new tie rod ends Idler arm and pitman arm, all those pieces were wore out, but didnt help the steering much, thought maybe its the gear box itself but there seams to very little slop in it. This is my first run in with hydro-boost so im not rear sure how it all works. Is this normal to have hard brakes and easy steering, or is there something wrong.