Help - another transmission leak

[4tiresngas]

Okay, I have been trying to clean up the underside for a little while now. I finally figured out where the transmission was leaking from. It leaks from around the dip stick. I got a brand new dip stick w/ new o-ring and installed it. It still leaks there.

So, I need to figure out where to get the grommet that is actually in the transmission housing where the dip stick goes in. Anybody know where I can get a new one..preferably online, since it's 45 miles to the nearest part store.

Thanks for any help.