A good indication of just how massive and complex the stage U2 is using on its current tour is came with the announcement that a 3 hour change in the kickoff time of a Jets football game required the concert slated to take place two days earlier to be rescheduled to be sure the crew would have enough time to get the stage off the field. The Sept. 25th Giants Stadium date has been changed to the 23d. The show on the 24th remains on that date. The Claw, as the stage has come to be known, is the largest and most technically advanced concert tour stage ever assembled. The band is using three of them, each transported by a huge fleet of trucks.