had same problem on cb750 I am trying to do up. Turned out that previous owner had cover off but did not reseat the rubber gromets that seat the generator wiring, Hence the leak, a new gasket and an hours work and all is well. A new gasket sorry I dont know where you are cannot offer any assistance on that one. Although I did buy a trail bike that someone has fitted a cb350 into so I will be in the market for one myself. Regards Jack ( of all things a Kawasaki kl250A frame)