ANI GIF EXPORT PROBLEM

I have an animated GIF with 34 layers converted to frames.  Each frame is set to a 0.1 second dely.

When I export that GIF and play it back, the timing changes at frame 29 to a much longer delay causing a pause in an otherwise sommoth animation.  I have deleted all frames / animation and rebuilt it using layers to frames, severl time and trying several different timing options.  The gif exported to my desktop still has the pause / delay / glitch in it. I had a few frames that I changed the timing on them to add emphisis.  I though that might be the problem so I changed them all back to 0.01 seconds and got the same problem.  If I veiw the animated GIF in web preview the glitch does not show up.  

Thanks Michael