Rod, the breather comes from the carbies and runs down between the rear of the clutch cover and the battery box and exits just below the bottom of the frame. My problem occurred on a rain soaked highway the bike would die at around 80 kph plus and coast to a stop. It would re-start immediately I'd take of get up to speed again and the problem would repeat itself. It did this three times and as I was close to home I just sat on 60 kmp and made it home. I immediately removed the tank to look for signs of water on the coils and connectors etc etc but they were all dry. In my case it definately felt like a fuel starvation problem. When you locate the breather put your finger over the end whilst the bike is running and see if it cuts out in a similar fashion

Regards CJ