I hate to dig into the details of your aileron problem but I am still not clear on how you mounted your servos and how the "servo broke away from the tape".

Did the tape separate from the wood? Did the servo slip out of the tape? Did the tape break allowing the servo to be disloged? Did the glue joint fail allowing the servo and tape to come out of the wing?

Kind of harsh interogation but it would help if we knew the exact problem you had so that we could correct /prevent the same thing happening to another plane.