The much-anticipated 20th Anniversary tour for Blink-182 will have to wait, it was announced Wednesday, as drummer Travis Barker needs more time to recover from a recent tonsillectomy.  The tour was scheduled to kick off with a performance at the Bamboozle Fest later this month in Asbury Park, New Jersey.  The festival's organizers announced on Wednesday that My Chemical Romance will take Blink-182's place, performing on the main stage in front of Saturday, May 19th headliners the Foo Fighters.  Blink, meanwhile, is hoping that Barker will be healthy enough by June to make the scheduled kick off of a European leg to the tour.