4-8-4 Sante Fe Steam engine

[AGM]

The front 4 wheels on the engine derails most of the time. It seems that it doesn't guide correctly, and bounces of the track. Is there something that I can do to keep  the front wheels on the track. When I take the front wheels off it does not do it. All help appreciated.

[ACY]

Is this HO or N scale, and what size radius are your curves? It sounds like you may want to increase your radius and add some weight to your pilot trucks.