I have an 0-6-0 Christmas train which ran perfectly last year ('06) but now has a tender wheel problem -- the front wheel/axle of the rear truck fell out.  As I have several models with the identical tender, I thought the simplest, fastest way would be to buy better trucks from my hobbyshop and simply swap them out truck for truck.  My problem is that I want the tender coupler and drawbar to be in the right plane.  Does anybody know the tender wheel diameter or otherwise advise me?  Thanks.
BTW, the little 0-6-0 (without valve gear) is a great little runner, and has been upgraded to a 2-6-2 with no problem.
- J

Dear John,
Contact service. They'll send you a new wheelset.
Have fun!
the Bach-man