He regained his title March 6, 2004 and remained champion for 10 months, surviving many title defenses. In the Summer of 2004, Sky and Scott Lost toured for Osaka Pro Wrestling in Japan. On October 16 Scorpio Sky won the "Revolution J Tournament", by defeating Super Dragon, Quicksilver and Joey Harder in a 4-way match. In November 2004 he debuted in Combat Zone Wrestling in a "SoCal" match. AXP once again were named the Southern California Tag Team of the Year. In December 2004, Revolution Pro Wrestling held its final show where Sky lost the Revolution Pro Junior Heavyweight title to his partner Quicksilver. Sky joined Pro Wrestling Guerrilla (PWG), a new promotion owned by SoCal wrestlers Super Dragon, Joey Ryan, Disco Machine, Topgun Talwar, Scott Lost and Excalibur. In PWG, Sky and Quicksilver hooked back up with Dino Winwood as their manager to chase the PWG World Tag Team Championship. They received a shot at the champions Arrogance (Chris Bosh and Scott Lost), but were unable to dethrone them. On February 12, 2005 the Aerial Xpress was given a rematch for the PWG Tag Team Title but were once again defeated by Bosh and Lost. Later in June, The AXP defeated Los Luchas (Zokre and Phoenix Star), thus becoming #1 contenders for the PWG tag team title. Bosh and Lost forced through stipulations that if the AXP lost the match, not only would that be their last tag team title opportunity, but they would also be forced to remove their masks. The Masks vs. Title Match took place on July 9, 2005 at "2nd Annual PWG Bicentennial Birthday Extravaganza: Night One". Quicksilver was taken out of the match due to injury after Bosh hit him with a chair leaving Sky alone. Though outnumbered Sky was able to roll up Lost for a three count. The match would go on to be named the Southern California Match of the Year for 2005. Despite the victory, Sky was assaulted after the match by Lost, Bosh, and "The Technical Wizard" Joey Ryan. The three bloodied Scorpio and removed his mask. The next night Sky did not show up for a title defense and the Aerial Xpress were forced to vacate the title, and the team split. This led to Sky's "Disappearance To Africa" angle. Sky was seemingly out of the wrestling business, but finally made his return in September, without a mask, to attack Scott Lost after his match with Christopher Daniels at PWG's Battle of Los Angeles tournament.