Apparently made out of tin foil and toffee, bend valve, obliterated spark plug, piston and head after factory prescribed servicing and a mere 3000km. Factory says its happening to most of the CXR125s they've sold, hence the reason they no longer sell them but wont replace my engine because I got the book stamped up at a non-authorised dealer. Oh well, 700+vat quid for the 125 or 500 for the 230, I guess mine is going to become a 230.