As Vince pointed out make sure you are not bottoming out the bit when you install it in the collet. Put it in all the way then back it out about 1/8", then tighten the collet. Definitely call Whiteside if you find the bit shaft undersized, they may have had a problem with a batch of bits and they need to know. They will probably replace the bit to make sure you have a safe bit if that is the case. I have always had good experiences with the Whiteside customer service department.
Your BRAIN Is The Most Important Power Tool In Your Shop. Turn It On Before You Turn On Any Other Power Tool.
A Disability Is Only A Disability If You Let It Be One