I recently applied shielding paint in the body cavity of my Fender Deluxe Active Jazz Bass. It is a mexican made guitar with active electronics. It has Fender noiseless pickups and obviously, a 9V battery compartment. I also desoldered the ground wire from the pot shell (mid control) and created a common ground point and soldered an extension from the star connection to a terminal connection on the cavity wall. I removed the bridge ground wire as well. My problem is that it is almost impossible to hear. To get any signal at all, I have to crank the volume and all tone controls to the max, including my amp. The blend pot works fine. It provides the same blend control that was present before the shielding. I thought I remember reading somewhere that active electronics require a different grounding scheme. Do anyone have any experience or insight to the described problem? It would be much appreciated.