The speed was due to the train climbing a bank before coming into view, so I had set the Controller (which was at the other end of the garden) high enough to give it power to reach the top....when it then hurtled past me!!!
The coaches run fine but do make complaining noises on curves, I expect the widely spaced flanged end wheelsets join in too......but they stay on the track.
Thank you James, I think they look great repainted and whilst not visible in the clip they have also been fitted with interior partitions and seating.
