Except for the mess, it's not a problem. Working the tractor all day mowing it may leak an ounce of oil from the shifter area. Not to worry. Most of the time it's at lower rpm and doesn't leak at all. You could try wrapping some cotton around the sleeve under part 008 in the diagram to reduce the flow path. Or you could get the parts list for your model and order all the suspect parts (maybe spendy).