Just an FYI/update. I installed my new cardone master/booster over the weekend. After spending an hour trying to bleed it, it was obvious it was no good. So now I get to take it back and try to get my money back.
Oh yea, after installing a good master/booster the proportioning valve wont reset properly and I still kinda have hard brakes with the rears being the ones doing most of the braking. I finally got the brake light to go out most of the time but it still comes on if I hold the brakes for a long time.