Just flew the new Great Planes Extra 300SP only for it to crash within 3-4minutes...elevator servo (the famous DS821 JR servos) locked on its first use and is seized solid! STAY AWAY from these servos. JR really ought to admit the problems with these servos. Now i have a plane smashed for a failure of the elevator - plane is amazing though - rolls like mad on low rates. lets see what horizon hobby will say about refunding my plane and also replacing all the servos...