A bit stuck here and hoping you guys can help me out. I have a hard pedal when I am breaking. When I'm driving the initial break is regular, but if I let off the pedal and reapply pressure the brake pedal barley moves and the truck doesn't want to stop, it also keeps getting harder with subsequent braking/letting off/reapplying. I replaced the booster with no lock and then the master cylinder still with no luck. Getting a good bleed too. Any suggestions before I replace the booster again?
Trucks an obs 7.3 psd.