The airplane came with a cracked wing and both servos on that wing were non-functional. The vendor was kind enough to send 3 new servos of which two of those servos were non-functional.
I��ve used foam safe glue in the crack, and purchased metal gear servos from emax to replace all six servos on the plane. The vendor refunded $20.00 dollars for my trouble and now all servos work just fine.
Hopefully the wing holds out under stress. The vendor should have replaced the wing set as well.