PRL keeps changing on Evo flashed to Metro

[paprikajo]

My Evo 3g is flashed to Metro. Everything works fine, have 3g service. Twice now the prl changed all by it's self. All of a sudden one day I noticed I had only 1g service, checked my prl and it said 2004. It was flashed and changed to 3026. OK, so I used qpst and changed it back to 3026. The next week, happened again. I have changed it back to 3026.... BUT WHY DOES THIS KEEP HAPPENING?

Anyone have any idea before I loose my mind?

Thanks