need a little help diagnosing whats going on, transmissions are beyond me. (and i still suck at the search <img src="/forums/images/graemlins/scared.gif" alt="" />)

Symptoms:
-Moderate slip in third and fourth gear under regular driving.
-Heavy slip in third and fourth gear while under load, acceleration, passing, climbing.
-Seems to be little to no change in the workings in first and second gear, no noticable slip.
-Seems to get worse the longer I drive.

Factors:
-It never overheated
-Filter change and fluid flush less than 10k miles ago. (did another flush Monday and it made no difference)
-Fluid is reading at the right levels Hot and Cold.
-I still have a small leak at the "Selector".

I'm thinking the torque converter is the problem but in all honesty its just a guess. Is it possibly the computer or selector? I know the 2nd gen rodeos have a problem with the selector. Most of the info I found was on the 2nd gen rodeos.

TIA

Scott F.