My wheels are not free running.

First of all check that the wheelsets are correctly seated in the bogies (part 10).

If that does not work then try loosening off the screw (part 41) attaching the bogie by a quarter to half a turn.

Finally check that the close coupling mechanism is not interfering with the wheels. To do this – remove the bogie and check that the H shaped insert (part 7) which holds the coupling in place is absolutely flat and clipped in properly – there is a piece that clips into the barrel and holds the coupling mounting.

If none of the above works please get in contact with us!