Guns N Roses production manager talks about constructing the stage ATLANTA --  The show is part of the band's "Not In This Lifetime" tour, which sees core band members Axl Rose, Slash and Duff McKagen on stage together for the first time in more than 20 years.      In a wide-ranging conversation with local media on Tuesday, the band’s production manager, Dale "Opie" Skjerseth, offered the following: Crews have been at the Georgia Dome since Sunday. There are three sets of s