Spectrum K4

I just got a Spectrum K4 from Bachmann and it wobbles from side to side going down the track.Has anyone else had this problem, and if so,how did you fix it?

If it’s new, I would think “Bach-to-Bachmann” , through whoever you got it from [ retailer ?]would be the only fix I would consider.
I can’t offer repair advice,as have not had first hand experience with a wobbly Bachmann steam locomotive.
Regards / Mike

My Bachmann K4 runs very well. No complaints whatsoever. You might have a driver that’s off center which, if that’s the case, will need to go back to Bachmann.

Terry (Ohio)