727 Transmission leaking

I have a similar problem too, leaks only when the car is sitting around for a little while, so I will go tighten some stuff up and if I find anything that might apply to you I will let you know!

Don't want to thread hijack, but a quick question, how do you tell the difference between a 904 and a 727? I have a 360 so I'm assuming it's a 727 but don't know for sure.