Thanks to all for your help. The bit was 1/2 shank and I am religious
about always lifting the bit to be sure it isn't bottomed either in
the bottom of the collet or against the chamfer under the blade. I'll
fire off an e-mail to Porter Cable and see if they'll replace the
bearing or the router. Wish me luck.


DonkeyHody
"Every man is my superior in that I can learn from him." - Thomas
Carlyle