Well, i'm back. Anyway, i have a Bachmann sound value B&O royal blue 4-4-0 (just one engine in my 40 engine collection now) I have wanted one for years but when i got it, a section of one of the traction tires was missing, so whenever that part of the wheel touches the rail, it dips down quite a bit due to the change in elevation. So my question is, how do i replace the traction tire? Especially the removal of the connecting rod, replacement itself, and the subsequent reassembly. Thanks.