Hitting forward twice

I've a pretty complicated project I created with about 70 different spots, some 4:3, some 16:9. Some of these spots have to be played in both a 'showcase' section and a 'director' section, so I've scripted it to jump to the desired track as an end function of each spot.

The problem I now have, is that when played on a DVD player, if you hit forward more than once, it jumps to the wrong track - basically the next track I created in DVD Studio, almost like hitting forward again is skipping the script and just jumping to the next track it feels like. Does this make sense ?

Is there a way to program it not to do this ? I know the problem is occuring as people are pushing forward more than they should, but it's difficult to tell this to hundreds of clients.

Many thanks