wheel sets

hello and good day to all,
i'm just curious to see if there is anyone who is kind enough to research or be willing to sell me any wheel sets for a trackmaster revelation Thomas, this is because i recently purchased one from my not so local toy store (i live in the middle of nowhere in England)and the left wheel was a bit scew wiff you could say and with in a matter of two days it came off (it took it's time and i didn`t force it off) co-operation is appreciated thanks

I do have spare set of Revolting oops I mean Revolution wheels, but they're green, not blue. I'm curious as to the exact nature of the problem and why the wheel is not re-usable. Won't it go back on again with a bit of superglue?