How did you hook up your linkage? With ailerons, if you have dual aileron servos (one on each aileron).. I don't have any idea how the PTS is setup, so I'm going blind here.. with dual aileron servos, both control rods are on "the inside" or "outside" of the servo (meaning, both setup with the rods closest to the fusleage or on the other side, furthest from the fuselage.

With flaps, one goes on the inside, and one goes on the outside. Then you can Y connect them and then reverse them as necessary to have either flaps (down) or spoilers (up). I will post a drawing shortly to show you what I mean.

CGr.