Lokar Dip Stick 4L60E

[HRBS]

Mark... how long was this trans sitting before you put it in the car and ran it ?
Could be that the front pump seal dried out during storage or may not have been replaced on the rebuild. If its leaking from there it would weep out of the inspection cover and coat the pan with fluid making it look as if it was coming from say the dip stick inlet.
Throw that bad boy on the lift and have someone start it while you look from underneath. That way you're not guessing.