need help with midi + piezo + reason(kong drum designer)

hi, i'm trying to make a midi drum kit using piezos, so i can use it with the kong drum designer in reason. using either of the sketches below i trigger more then one pad in kong for every strike on the piezo and i can't figure out why. can anyone help?

ArduinoMidiDrums.ino.ino (6.32 KB)

another_midi_drum.ino (902 Bytes)