Thanks guys for your info, have now since found out that crank seals etc were worn, ended up with a complete engine rebuild, conrods were good but middle bearing seal shot which was allowing fuel to pass etc, all done now just needs running in, sounds brilliant and purrs like a kitty cat!!! But sadly she still has to be sold....not happy but too many toys, someone will now have a ready to ride rebuilt and restored mc18 which i will not get the joy of riding