... past one of the little O-rings at the base of the top studs through which the oil is fed up to the rockers, mine has had a slight weep from new. Nothing bad, but could I have heard about a very slightly oversize O-ring available as a replacement to cure this little niggle? It's virtually the same size, but just a few thou thicker. The bike is in bits, otherwise I wouldn't bother after 28years. 
