 On October 12, 1998, KXPK changed to a younger-skewing alternative rock format, and added the syndicated "Howard Stern Show" in morning drive time, while still retaining the "Peak" moniker.In April 1999, the station gained some brief notoriety when Stern made controversial comments on the Columbine High School massacre, with hundreds of complaints filed to the station.Possibly due to the controversy, KXPK moved to an All-80's Hits format on September 5 of that year, again with the "Peak" moniker.