Hi guys I currently ride an XR250 and an XR400. However, I am a little frustrated by Honda's failure to bring out an equivalent product to the new WR450, therefore I am considering swapping my 400 for a Yam WR 450 if I can get one. My only concern is that my XRs will run and run. Provided I put oil and fuel in, lube the chain, I am sorted. A friend of mine has a WR400 and he's on his second engine already. He would also tell you that he has to spend quite a bit of time on maintenance. Honest opinion here guys. If I buy a WR, will my I find myself doing a lot more major engine work, or is my mate just unlucky? I apreciate that the WRs are a different beast to the XR, but I need to undestand the implications of ownership. Thanks in advance for you advice.