Brake problem I just put new brakes on my gen 3 and added new dot 3> the veins are clean ?? so why do all 4 wheels lock up on me from time to time. I could be driving along and the car will start to shake. So I pull over jack it up and check all 4 wheels and sure enough all 4 wheels will not turn?? Please help!! Every trouble shooting in the book I have tried has checked out the booster and master cyl