UK railways in general, both steam through to moden day. I model in OO and OO9. I also enjoy modelling military vehicles and aircraft, a bit of photography and generally relaxing when I'm not at work!
A touch of glue should solve it, it won't be sprung any more, but that's not really a problem. I'm not planning on selling it ever, so it's collectors value isn't an issue, once I have a suitable layout, it'll be a working engine!