I've a '92 PaceArrow with a Chevy chassis. The pressure switch on the large rubber hyd. failed, causing fluid loss. I replaced switch,refilled and bled system. Now I have brake boost and pwr steering when in park. When put into gear or neutral, hyd. parking brake releases, light stays on and I loose steering and brakes. I bled approx 1/2 qt. fluid from parking brake accuator. Could it need more bleeding? I didn't run completly out of fluid so I don't think the pump is damaged. Thanks.