| Sorry guys i think your all going the wrong way with this.
If theres a large amount of unburnt gas in the oil, then the chances are its comming out of the fuel tap while the bike is parked up (yes i know the over flow should drop it out).
I suggest as a matter of caution that you chekc the tap is not running while the bike is stopped (its a vaucumn tap right?) and that both the varbs overflows and vents are clear.
You know this is extremly bad and fatal for any engine. | 
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