I applied pitch shift FX to an audio event, but unless I play from the beginning of the clip each time, the synch is inconsistent and changes each time I click and play anywhere in mid-clip. I also needed to split the audio clip multiple times and slide them to synch with video. But this was not possible, given the random synch problem. I had to guess where to move a clip to, play from the beginning each time, on each clip, to guess the degree of error, move the clip some, play again from the beginning, etc.