minor transmission fluid leak due to breather(is it possible?)

hi, i have a 2002 ford explorer xls auto v6 which i brought used at 52k miles and after driving it for 8k took it for transmission
service,radiator flush,power steering flush and replaced fuel filter at a ford dealer. after the service i notice fluid leak on the floor on a regular basis and took it to the dealer who said power steering hose was leaking and he replaced it. then while driving on the highway it started smoking which i did not realise but i driver from behind informed me so i stopped and on opening the hood it was letting out little smoke and some drops of trans fluid was falling on the road but nothing major leak. so i had it towed to the dealer and he said the torque converter seal had gone bad and needed replacing even though the vehicle was driving perfectly fine. i noticed that on driving short distances there were no fluid drops on the garage floor but if more than an hour and then i parked there would be a few drops but no puddle. so i took it aamco and they cleaned the whole underbelly and i drove around for 2hrs then i took it back to them and the leak was from the top of the transmission and nothing major.
they said the dealer had probably over filled the transmission fluid during service and that was leaking through the breather once the transmission got hot and would stop eventually once extra fluid got out. 2002 had no trans dip stick.
is that a viable cause or there something else. he also opened the seal of the transmission and it was dry inside and the vehicle drives totally fine.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Sounds viable to me. If the dealer over filled the tranny the fluids gotta go somewhere and thats what the breather is for. On long trips what will happen is the fluid if over filled will churn and foam up kinda like a can of soda if you pour it real fast into a glass. Bubbles are created and over flow outta the breather tube on the top of the transmission. This will stop once the tranny fluid reaches the correct level and it should be fine. Keep and eye on it for a few weeks just in case but like I said it should stop leaking once it reaches the correct level.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
So can anybody here enlighten us why they deleted the dipsticks from automatic transmissions a few years ago? Save a couple bucks? Avoid liability in case the user hurts him/herself while checking fluid level, because the engine needs to be running? One less spot to leak from? Make more money for the dealers by not letting the user add or change fluid on their own? I am guessing the latter. So what's next, no engine oil dipstick either?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.