It sounds like you just have a 722.118
Take a look on the casting just above the transmission oil pan - there you'll see a row of numbers on the right hand side (taken as though you are sitting in the car).
In this picture you can see the physical differences between a 722.118 (background) and a 722.112 (foreground) - no lever for the linkages on the 722.118...
When you say overfull - did you physically measure it?
Are you 100% sure that you have the correct amount of fluid in there now?
(You know the dip stick should be checked with engine running etc on a warm gearbox but not too quickly after driving etc etc etc - it is a pain in the arse)
Someone posted some info for checking on a cold gearbox - I'll try and dig it out - If I remember correctly the tip was from the owner's manual - what a funny place to find information!