I think your leak is in one of the 2 circled parts of picture I'm attaching. I would look at them first.
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First, thank you Chuck for your reply. I'm afraid I'm going to need a bit more help. First, could you elaborate on why you suggest I consider those parts? Second, would it be necessary to remove the remaining parts of the rotostop? Would that help me pinpoint the leak? The parts that you are suggesting that I look at are the oil filler tube and associated o-ring. If the oil came out the filler tube, would it not be on the deck surface? As for the other parts on the other side of the motor, again, wouldn't the oil end up on the deck surface? I'm curious, what purpose to those parts serve?
Thank you.
Mike