I have a leak in the front of my 46 1/2 ton pickup 4 speed transmission. I was pulling the engine so I thought I would take care of this problem as well. Thinking there would be a typical seal to replace, I found nothing but a thin paper gasket between the bearing retainer and transmision housing. Those who are familiar with this transmission know that there is a 3/8" hole in the side of the retainer neck. It has the gasket to seal against the housing but is there another seal that keeps the gear oil from coming out of the hole in the neck of the retainer or out the end of the retainer around the splines? Is it correct that the hole should be at the top when reinstalled??? thanks! slowgoer