Did you install the two little o-rings on the flange, and seal/plug the two holes (loctite) on the top of the flange? That is the most common error we're seeing with this procedure.
You didnt damage the triple seals putting them in did you? It doesnt take much to damage them and there isnt much else in there that could cause gear oil to leak.
I don't think I damaged them. After sliding them onto the input shaft, I took a heat gun to them and started to warm without cooking them to a point where they started to degrade. I don't know, maybe I should order some new seals and give it another shot. Thanks Pap.