So, last week I rooted my TB and installed the leaked ICS ROM. One of the things I wanted to accomplish was to fix a bluetooth communications issue with my Camaro. (would start a call on BT, and it would switch to earpiece on its own, etc) Good news is that the BT now on ICS works very well. Bad thing is that battery life is quite bad, worse than it was on the stock GB. Is it possible to pull the bluetooth.apk from this ICS build, revert back to stock GB and replace the existing bluetooth.apk, or will that break something?