It was rough because Culpepper was a career 3 sack/game QB, while Harrington was not. Also the Dols are going to put Shelton back at OT, which is a mistake IMHO.
The key will be if Carey can be a good LT. I doubt it. He's a classic RT and would have done well staying there. I've already made my feelings on Shelton known. And I agree that Hadnot is a good RG and better than what the Bills have, until proven otherwise. But starting a rookie at center and at LG having Liwienski, who couldn't even start for the Cards, or a rookie, is going to be pretty rough.