I've recently ridden a XR400 & CRF250X and liked the CRF X but can't afford a new one. Coworker said WR426F has more power and is reliable; kind of what I want. Test rode my first one last night on little streep strip and the power just did not impress me at all!? It's supposed to have much more power than the XR400? The bike was '01 and by looking at the bike had not been ridden hard. So, what can be wrong or are there some easy mods that the owner had not done. He didn't mention anything so maybe he doesn't know? Any tips would be appreciated or please point me to a link where this may have already been answered.