Yamaha 2000 T9.9ELRY 4 Stroke. Why is gear oil leaking from 2 of the 4 wee holes at the top front of the lower drive unit. I haven't noticed so far any oil throwing from the prop seal; haven't noticed any signs oil coming out of the water pump pee hole. The drive unit did have milky custard water oil. Which seal/s is/are the likely culprit/s? Could the shift rod boot be the problem; is it a combination boot and seal? If the pinion shaft seal is leaking wouldn't there be oil coming out with the water at the pee hole?