Original sentence: They are now on the Lets Make a Mess tour, co-headlining for Hey Monday
Edited sentence: After Warped Tour, they will go on tour with headliner Cartel, alongside The Summer Set, The Dares and Runner Runner.They have just finished the Lets Make a Mess tour, co-headlining for Hey Monday.They will soon start Warped Tour 2009 on 8/15-8/23