what does this mean? transmission shifts like normal, but there's a slow drip from the seam where the bellhousing bolts to the block, down onto the diff, then onto the ground. it's making quite a mess

119k on the A340H tranny

 

Probably the front seal on the tranny is leaking. Check the fluid level more frequently. A small drip is just messy but if it gets worse it should be replaced.

 

level is OK at the moment

the seal is replaceable? i looked in my FSM, and didn't see anything about servicing the seals

 

Oh it's replaceable, not fun though. Gotta pull the engine or trans as you know.
Here is a pic of my old one before replacing it.

 

ok, great. i'll watch the leak and if it gets worse i'll drop the trans and tackle this....ugh

 

Good luck!
In retrospect I was in a hurry to get my engine installed and went with the Oreilly seal. Looking back I would be more comfortable if I had purchased an genuine Toy seal.
Sorry about the supersize pic everyone.