N Scale Con-Cor Aero Train

[N Nut]

Just got the decoder in and after adjusting the magnetic couplers I ran the train on my inside passenger route. Derailed on every turnout and cross-over. Moved it to my passenger line, same thing. No problems with any (Atlas, Kato, Intermountain) of my other loco's steam or diesel. Anybody else having the same issue???????