Thanks for your help on this post in the past. 70 Challenger, master cylinder was empty after 6 months storage, no sign of leaks, manual factory drums.could not get all wheels to bleed so I replaced m/c, bench bled. Replaced rubber hoses, replaced wheel cylinders. Tried bleeding with a vacume pump but the pump would not draw fluid from all the wheels. Tried gravity bleed didnt work. Tried the good old fashioned pump the pedal. Seemed like they bled. Test drive, exactly the same as when I bled the original system. Firm pedal, step on the brakes and the steering wheel jerks from side to side and one front tire begins to skid. Car stops fine however you practically loose controll. The brakes worked fine for years when I parked the car. Bled it in the past with no problems. Dont know what yo do at this point. Ive tried everything I know.....any help woild be greatly appreciated.