Ken, when I make carbon fiber pushrods for my planes (I do on all of them) I usually take Sullivan 4-40 rods with threads on both ends, cut about an inch and a half past where it turns smooth, score the metal with a dremel and then epoxy that into the carbon tubes. Then I use Dubro 4-40 Safety Locks.

http://www3.towerhobbies.com/cgi-bin...?&I=LXWH35&P=7

These homemade connections go on all control surfaces except for rudder and throttle. Are you saying this is a bad idea? Not being flip, honestly curious.