I just bought a '04 CRF450 for trail riding. It is alot of bike for the trails. I have a buyer for it and was wondering if the WR450 was more suited for the trails. Does it overheat on tight trails, is it geared low for the trails, any problems with them????? Do all these new 4-strokes require the top end to be rebuilt ever 100 hours or so? I wanted a 4-stroke to just get on and ride, not work on. I have 4 kids and just keeping up with them is a task. When I want to ride, I just want to go out and ride with the kids. Is the WR450 the bike for me or should I just look at the Honda XR400... Please help with you opinions.