http://lh3.googleusercontent.com/KOq...g=w627-h872-no
As http://chinariders.net/showpost.php?...3&postcount=69 The 15# url

Yup i might of been a bit too keen on the rtv, going to rebuild again and remove every particle of rtv,and just plain gaskets this time

In relation to the rubber bung i read somewhere its to redirect oil to other passages apparently

Now that you mention it, I've spotted that on XR200 motors, but I haven't built one in a long time.

HB, is that a CB engine diagram? Is there much of a difference between a CB250 and a CRF230 engine? Do they have the same stud spacing?