Bombardier Metrolink

[filmtrain]

I was given a beautiful Athearn Bombardier Metrolink passenger car for my birthday by someone who did not know what I was modeling.  I really like the looks of the car and thought I might make a set and modify them for my layout.  But I am having a real problem with the trucks.  I have very wide radius curves and still this thing wants to jump the rail.  Anyone else have these and have some hints, tips, tricks?

[RAM]

Does this car have truck mounted couplers?  If you try to run long car with one being truck
mounted and the other body mounted, than you will have problems.  Truck mounted couplers
want to push in while the body mounted couplers want to push out.  If this is not the case, check
to see if the wheels are in gauge.

[filmtrain]

They are not truck mounted couplers, they are body mounted.  I pulled off the trucks and put on standard freight car trucks and it seems to be working better.  I wonder if more weight above the trucks would help.