I've noticed that every time the rail Tour spawns it's always driven with a class66 at each end. I spawned at Lewes at 12:40 and waited for the rail tour to arrive and when the service arrived it was a made up with a top and tailed Class66, I have tried this about 10 times now and each time the service spawns' it is always the Class66 at the front . I have looked in the timetable and the rail tour is not listed as a service the class66 does, although I can select any BR loco myself to drive from the menu the A.I is only using the class66