Jim:

Yep, that's what our friend had, his broke at the base, if you glued it already, well, you should be OK as long as you do manouvers that are not too aggresive on the rudder, yet, if you like to fly a lot of knife edge, I recommend that do not fly until you replace those with the airpower carbon fiber horns, dreamworks has them, I believe they are $9.00 for a set of four. Based on our friend's Dragon incident, those FRP horns are not strong enough to withstand the force needed to keep the Dragon on knife edge...