Well Installed the last of my new control valves, (thats make the forth new control vavle.) Still the same problem, made sure the measurement was 4 7/8". the last one was installed at 4 3/4" thought that might be the problem but it did not help. Any other ideas?????? Sold my original ford valve, that what was stupid!!!
If they had that many bad valves coming back they should be checking them closer.