Quote:

How would a distorted fex plate cause a vibration?



If I'm understanding this correctly:

If the crank bolts are hitting the converter and they tightened the first flex plate bolt all the way initially, you would have to draw the plate to the converter with other 3 bolts (after the first one is tight the plate would be putting force on the heads of the other 3 bolts, or pulling away from the converter) which would bend the ears and create a spring like tension VS the plate laying flat against the converter as it should be and the bolts simply holding the 2 together.