So earlier to night I was cleaning up my E-revo and noticed the rear passenger side is wet. It hasnt been around water either. So I was wonder is there a seal kit I get for it? I'm looking at the diagrams that I got with the car and i find it a little hard to see what it is. Would this be what I would need to fix the problem http://buy.traxxas.com/product_info....oducts_id=9515 also which weight of gear oil should I go with after fixing this?