I just noticed..... you said:
I put channel 6 and the master, and then channel 1 as the slave. Then, I REVERSED CHANNEL 6, and then went back to the P. Mix and changed the Master and Slave to Channel 6.....I rotated the flap knob and the ailerons still were going the wrong direction, UP
You don't want to reverse the master channel. You want to reverse each slave channel individually, MAKING SURE THE MASTER IS CHANNEL 6, ALWAYS. Remember, the while the master is on channel 6, you are editing the flaperons. But, you won't see any effect unless you edit the slave channel.
Again, hope this helps. -Andrew