8 3/4 spitting gear oil out of breather vent

Yes, mine leaked with the new aftermarket vent tube. I thought that maybe something was sticking and building up pressure, I was having trouble with the pinion seal at the same time. I made up a pigs tail brake line tube , it works, just haven't gotten around to playing with it again. Doubt that it's overfill, as long as it isn't running out of the fill hole.