I do everything the guys are talking about above, and I also use a small drill bit to reach inside the carbon fiber tubes and rough up the inside (the inner surface tends to be smooth and shiny), which helps the JB Weld to soak in and grab on. Additionally; I put a carbide bit on my dremel, and run it on low RPMs to rough up the contact section of the titanium push rod ends to insure positive adhesion. I wash my rod ends in denatured alcohol or acetone to remove any lubricants that might remain on them.
U2 - You have to poke a hole or two in each plane. That's what makes it YOUR plane.
~ Jim ~