So, a week or so ago I fixed the switch to the siding that hold's my Grandpa's old 265E. I guess the idea of it running regularly was more than it could handle, because two of it's wheels came loose, and it refused to pull the train. The gear wheels still work with the motor, but the other two wheels can move free of the drive wheels. The axles seem to be attached to the non-geared wheels. Any ideas on how to fix this, before I contact Henning's Trains for repairs?
If it matters, it has the thick nickel drivers (3 original, 1 a Lionel replacement installed around 1940)