05 F350 on 37's, brand new gear box + ps pump less than a year ago. Power steering use to lock up after initial start then would go away, recently the initial lockup hasn't happened in a few months. I just arrived in Virginia from Massachusetts with no issues at all, all of a sudden today i drove local and the power steering was real tough unless i had the throttle down. For example on a straight away when i coast and then apply the brakes i can feel the brakes getting real weak and i attempt to turn the wheel but its like wrestling a fat broad. I checked the fluid and it was a CH low, no leaks either. Think its either air bound again or the pump saying goodbye. Was thinking of having the stealership power flush the system.