Which version are you running? In version 1.0.6, there is a bug in the power management that was putting the trackball gpio to sleep when it is off-charger but this is fixed in 1.0.7.
I have updated the bug section on the main post with the signal strength issue. I found the problem with and I have it fixed on my test phone so the fix should be in the next version I release.
2- Write access denied at sys/android_touch.
3- I have in previous its working well for me. Would you like to add sweep2wake feature. (screenshot below)