I need to insert more time into the beginning of a scene so everything gets pushed back in the timeline. I had success the first and second  try but I need more frames inserted and now it throws the face motions out of timing with the voice. I hit undo (timing is back) and tried again and timing is off. I tired restarting the program and the same results. Is there a limit to how many frames that can be inserted? I think I have inserted 40 or 60 so far.

I'm not a an expert, just a user.   Have you tried sliding the face motions to a specific point in the timeline,  then go down to the audio track and do the same?  I've slid my audio up to 100 frames down the time line. It might be possible to slide both at the same time by selecting each track with edit control,  but i have not tried this myself. 

thanks for your response. I ended up redoing the whole section again. It took a long time but since I had no other solution....