If you can get to Denton, without too much trouble, I can highly recommend (as of Mar 07 when I left Texas) Huffines..only the Denton store, as that is where I purchased my XFire and had it serviced for almost three years. They also serviced our Jeep, which I did not buy from them. They still treated it as if they had sold it. Great service (techs know the Crossfire), and Parts departments.

You might also check into the Texas Lemon Law, since you have had it back 7 times.