I have a 2001 Escort with 93,000 miles, 4 cyl automatic. It began clunking when it shifts from 1st to 2nd. 2nd to 3rd, 3rd to 4th along with 4th to 3rd, 3rd to 2nd and 2nd to 1st are OK. The transmission fluid was changed about 2 months prior to this beginning and has been going on for about 3-4 months. My mechanic who doesn't do transmissions says it could last a long time and it hasn't gotten any worse. Do you feel the price would be reasonable to fix or should I just live with it?