If I redo my elevators, I would probably put in 4 robarts for elevators and rudder (each surface). Three would probably do it, but 4 would be better! Im still thinking about doing it to mine! I just hate to have to start over and realign and glue and ...... so on so on! But then again, if the CA hinges aren't good enough, I will have to reglue the entire airplane! Anybody using the stock CA hinges? Please let us know what you think!