Does anyone know why this might be happening,
The airport I'm at is manchester (EGCC) and I have the world airports addon installed at this airport ,
When an AI aircraft lands most of them turn left to exit runway 24R and do a complete circle on the runway to get off when they should turn right to exit, I've tried different taxi speeds but it still does it and I even redone the runway and taxiways with afcad but it still does it 

Does anyone know why this might be happening ???