Fired Car up for first road test and we have a brake issue.. essentially pedal pushes to floor when booster is under vacuum with essentially no pedal pressure. Essentially no brakes. Lines are bled well. Guessing bad boaster but I expected pedal to be hard as a rock with bad booster??? Really need some thoughts as I hate brake work!! We have a booster ordered but won’t be here till Tuesday. Pedal has plenty of pressure when vacuum hose removed. 70 Cuda with factory front disks.