Gerald, this excess oil, have you topped it up by that much recently? Do your carbs weep fuel? Do you turn your fuel taps off when you've parked? I have seen, only once, a crankcase filled with petrol from a 'leaky' carb dribbling fuel through the inlet and running down the bore. If there is any chance of that It would be worth an oil and filter change.
Gerald, this excess oil, have you topped it up by that much recently? Do your carbs weep fuel? Do you turn your fuel taps off when you've parked? I have seen, only once, a crankcase filled with petrol from a 'leaky' carb dribbling fuel through the inlet and running down the bore. If there is any chance of that It would be worth an oil and filter change.