you sure its ATF. might be oil.

when one cyl starts to go from age... ti kinda shows the conditions of the rest of the engine.

i finally got down to regrinding my crank last night... it had 2-3 thousandths of where.. if my imput shaft on my tranny wasn;t so sloppy to beginwith, that might be enough to make it leak.

so if your mototr has been as a bused as mine you might just have enough where to cause parts to be sloppy enough to make them leak.