Tire Problem with 2002 Xl-7

Hello, I was wondering if anyone has had a problem with their aligment on their XL-7. I have a 2002 XL-7 and since I've had it the alignment goes out all the time and makes the tires wear unevenly. They tend to wear in the insides of the tires. I was just wondering if anyone has had this problem and if they were able to get it fixed.

Thanks,

Jaime

I know someone else that has this same problem. They have a 2001 XL-7 and have went through 2 sets of tires since they have had this vehicle. They have also had a few alignments. Still clueless to why this is happening. Tires keep wearing on the insides.