Annoying transmission pan leak 727 TF

Hello all,
Im sure im not the only one with this problem,but I cant seem to fix the transmission leak on my 72 Duster,360 w/ 727 TF.
It seems to come from around the oil pan of the tranny.This is the second time I have put a new gasket on it,and it still leaks.:banghead:
I didnt over tighten the bolts,but the gasket is from Autozone,so maybe theres a better gasket available?Would cork be better?I cant see anywhere else it could be leaking from.Its mostly wet around the pan and the bottom of the pan.I know RTV sealant wont work because the fluid eats it up.Any help would be great