I believe the stock Sprint rom came with a different signal strength icon (7 bars at most) while MightyROM comes with a default of 5 bars at most.
You can get the 7-bar signal and a more accurate battery icon with the attached cab. Using it now with no issues with the latest MightyROM WAR.
PS - I am also having issues with my signal going from full to none with Sprint. I am using now the Telus radio which seems to minimize the switching for me (it still happens, but less often).
