2002 Lincoln Continental Tranny Problems

I have a 2002 lincoln continental. transmission was bad when i purchased it. I've had 5 transmission and torque converters installed, all sensors pertaining to transmission, complete wiring harness, computer reflashed. Check transmission light is still coming on once the car is hot. Diagnostic says 01744 TTC clutch stuck in off position. Is there anyone who has had a similar problem or has any advice as to what I should try next. Any help will be appreciated.