Bob McGinn of the Milwaukee Journal-Sentinel does a annual series of position-based draft previews by talking to NFL scouts and GMs (he seems to have pretty amazing contacts, in that he gets these guys to talk on and off the record about both draft prospects and Packer opponents every year). As with any draft preview stuff, take this with a grain of salt, teams trying to hide their intentions, etc., etc.
Anyway, here's his summary for Molk. He has him as the #3 center after Peter Konz of Wisconsin and Ben Jones of Georgia, going in the 3-4 round area.
3. DAVID MOLK Michigan 6-1 299 5.05 3-4 Overcame a broken foot and torn ACL to start 41 games over four seasons. "He's a tough kid and probably as quick as any center off the snap that's in this draft for sure," Reiprish said. "I think he'll battle pretty well. He's got stout body strength. I don't know if a center can be too small." Rubbed some observers the wrong way after screaming about how much money he had just made after benching 41 times at the combine. "Different kind of guy," one scout said. "Very opinionated. He maybe rubs people the wrong way." Hails from Lemont, Ill. "He's a midget," another scout said. "You've got to love him. He's tough as hell, he really is. But he's also small. We took one like that a few years ago because of our idiot line coach."
He's only done QBs and OL to this point. Will be interesting to see where he sees Martin going, and if Koger or Hemingway are even written up (they tend to be the top 5-10 prospects, depending on position)