Solution
Thank you to everyone for your responses. After rigging was checked, torques checked and verified, I have come to the conclusion that the initial bias was set incorrectly by taking measurements over the pivot bearing cover and not the blade cuff forward of the bolts. I asked various mechanics how they have taken measurements in the past and most of them have admitted to taking them incorrectly. Corrective training was implemented and the bird has been flying beautifully with ips levels well below goal. Thanks again!