I'm seeing the same results. I tried the hgray route and everything installed fine but I couldn't ever get a lock. I did see a this
http://forum.ppcgeeks.com/showthread.php?t=25407 but I couldn't get the new set of drivers to install. Couldn't overwrite "gpsapi". I flahed the new alltel rom again thinking it was something that was installed when I did the hgray solution but when I tried to install the new drivers again on the fresh rom, it wouldn't copy over it again. What's even more weird, when I look for the file, I can't find it (I have show all files checked). I tried looking from the phone and from my PC.