Roaming help!

[Shavkat]

Hi, i have problem with connection.
I need to turn off "ROAMING" service.
I had no "BLACK TRIANGLE" icon near to clock until i flash to other rom.
But after flashing many other roms and radios i can't remove this icon.
I flashed WM5 and "BACK TRIANGLE" changed to "[R]" icon.
Now i have Official Sprint ROM 3.35.651.2.
But i still have this problem.
My signal bar is very lossy.

I try to turn off roaming service from
Phone->Menu->Options->Service->Roaming->Automatic.
But i still have this icon.
If i select Sprint Only i lost my signal, and [1X] icon will lost.
If i call to someone phone telling me that I'm at roaming zone.
But I'm not.
Strange.

Help me guys, please.