By Alan Jones, PA Industrial Correspondent & Lawrence Matheson Rail passengers are being warned they face more travel choas because of stikes by train drivers in a long-running dispute over pay. Members of Aslef at 16 different train companies are going to stop working for three days between April 5-8. They also won’t do any extra hours from April 4 to April 6 and from April 8 to April 9. Passengers may see some trains get cancelled without much warning. Revised timetables for the strikes have been drawn up and passengers are being advised to check before they travel. On the days when the driv…