Who was it who had trouble with the Bachmann 56XX 0-6-2T?
You can't have done, you must have been making it up. After all, look at the review on p.39 of the February BRM:
Performance is exemplary with smooth running at all speed ranges and no limping or wobbling caused by poorly fitted wheels or bad quartering.
Well, there it is in black and white, so it must be true.