I've bought a Next18 decoder with three wire stay alive, charging board and stay alive capacitor and crammed it all in the smokebox of my EFE Rail Austerity..
No matter how gentle I am with the controller it leaps off wildy but quickly settles to the speed set. Transition between speeds is pretty good. Stopping is equally wild. The decoder and associated stay alive work as expected work fine in another.loco.
Any ideas as to what's going on?