Ford Repair: vapor locked Mustang, 2000 kia sephia, kia sephia

Question
I have recently purchased a 2005 Mustang to drive to work that is over an hour away each day each way. I have been having trouble getting the gas tank to allow me to fill the vehicle.  Before I purchased the car the salesman who was driving it as a demo unit had the service dept. change the gas tank.  I have since had issues and still under warranty they adjusted my gas cap and told me to try different gas stations.  I already go to different gas stations all the time and have the same problem with all gas pumps. They also told me to hold the nozzle half way out which I was already doing. What can be done to help me with this problem?

Answer
Hello, John,
Well I would go to Ford Directly with this problem. If the Dealership cant get anywhere, then you have to. Most Dealerships will just rather not Deal with the problem since the vehicle has been sold. I bought a 2000 Kia Sephia, brand new and from day one, I had nothing but problems.. Finally I went to Kia, directly, and for lost time and wages from work we settled out of court. I finally traded the headache in for a new 2004 Chev Cavalier. Thats the only way you get things done right.. Thanks..