I bought a 1993 Audi 100 CS V6 Automatic sedan that has a new rebuilt tranny in it with approx 20,000 miles alone on the tranny. The car itself has about 130,000 miles on it. After a long car drive yesterday, the tranny started having rough shifts when shifting up or down. Transmission fluid is clean and full. I can get my car fully up to speed with no problem and its seems to be fine other than the rough shifting. Any clues as to what is causing this, maybe a sensor?