Pit stop issue

[mauricecal]

Hi guys, I have a problem with a track mod...
When AI cars enter the pits, they just drive pass and don't make a stop, they leave the pits without making a stop. Then they go for another lap and enter the pits again without stopping, they continue doing that until they run out of fuel.
It doesn't happen to all cars but it happens to a quarter of the field.

The track mod is Sugo 2006.

Any suggestions on how to fix it?

Thanks.