BLI N&W A

[NW Modeling List]

My first time posting here. I am modeling the N&W late steam era (mid-‘50s) with focus on coal mining region.  There will never be a diesel loco on my layout!

I have an early (‘83 vintage) BLI N&W A and a later BLI A. The “modern” A runs great.  The ‘83-vintage A seems to lack sufficient downforce on its front truck, which derails everywhere for no reason. 

Has anyone else experienced this problem?  Does anyone have a suggestion for a way to increase the load (pressure) on the pilot truck to keep it engaged with the track?

Bill Demarest
N&W Steam Only