09-05-2012, 06:44 AM
The trucks of the 70 ton switcher may be not perfect assembled at the Bachmann China factory. I did unmount some of them and about half of them did roll like a good car on the table. The material used is very soft/flexible and the button part as well as the two mounting screws may be source of misalignment. It is well spend time to carefully reassemble the trucks until they roll perfect on the table. The steel axis should get some lube. They are dry while the gear wheel are over and over covered with lube.
Reinhard