alco s4 die cast gear towers meaning?

[ALCO0001]

Hello Again,
I have seen adds for the ho scale Alco s4 stating that they have die cast gear towers in the online web store and other sellers.
Have they made a running change since mine are plastic ? They self destructed last night again on me,wheels fall off axle ,gear pins back out of plastic gear case and the wheel ground into the side frame and then all the lights start flashing since it stalled when I took my eyes off it for a minute.Any hope for this?
Jack

[the Bach-man]

ALCO,
Call service. They'll discuss your options.
Thanks!
the Bach-man