Pulled my 1100 down last weekend to try and replace the nuetral switch. Pulled the tank out, but my left hand felt cold, took a whiff and my hand had that petroleum smell to it!!
The fuel return hoses that come from the rear of the carby banks had deteriorated and split, from there the fuel drains straight onto the alternator ( BOOM ).
Looks like I was very lucky, could have been a copy cat incident.