I just installed the active electronics in my bass and after plugging it in, my volume control stays at one volume level. At 0 position, there is no volume but when I go to position 1, its quite loud and is the same volume to position 9. At position 10, it cuts off. I used Carvin 501B module and Carvin soap bar humbuckers. Also, the mid control does not seem to be working but I have read elsewhere that this particular model is known to need adjusting in regards to the mid. Otherwise it sounds amazing. Thanks Guys.