Thanks for the tip. I hadn't thought of the skewer. I did just recently change the rear skewer and the problem persisted pre and post. That does make me think though that I should check the drop outs and clean them out. Maybe there is some grime in there that is causing things to complain under load. I do crank the QR down pretty tight. I feel also like sometimes the creak comes not just from hard pedaling but when the wheel is put to some lateral side to side stresses.
Anyways, here's hoping it is the BB! I'm going to go insane if that's not it. (or the new drop out idea) I've even got a brand new spare BB. They mistakenly included two in the groupset I ordered.