The 49′ers are getting a look at rookie tackle Joe Staley, and the staff says he is doing well filling in right now at the right tackle spot.  Staley is playing a lot with the first team as Kwame Harris is sidelined by a back injury.  The issue with Staley is he has not played at RT since he was a sophomore at Central Michigan in 2004. He has also put on 7 pounds to help adjust to playing run defenders versus speed pash rushers.