Sprint Navigation Backlight won't stay on

[prophetizer]

the only time i have had sprint navigation backlight settings work is from the official update. even if i set in the software to always on, and even in windows mobile settings to never turn off backlight, it still seems to turn off. and not at set times either. sometimes with will turn off in a matter of seconds, sometimes could be 20 minutes, sometimes turns off as it's telling me where to turn and cuts the voice off.

i wonder if maybe this has something to do with the different tweaks applied by the kitchen?