That is the one,

http://manuals.hobbico.com/gpm/gpma1022-tech2.pdf

it is referred to as manual 3 on the tower hobby page for the extra 300sp. Apparently it was supposed to be included with the manual. I do agree with the above comment that the manual does not show the hookup of the aileron servo links, however it does show the rudder elevator combination connected in the "EXTREMELY DANGEROUS PUSHROD HOOKUP" as referred by the tech notice flyer. I never thought their would be a problem hooking up the ailerons this way. I have a Twist with standard servos, and all the controls are hooked up for maximum throw. I have never had any problem with flutter. I did like the way the extra flew, so this time I will try metal gear servos, 4-40 pushrods and even some of those counter balance weights I saw on another post. If nothing else, its a hard lesson learned.........