Hi all. Bit of a head scratcher here. I fell in love with a Mania bass (vtb-4bs) that was on ebay and not having owned an active before , i had to have it. The guitar is beautiful , the issue is the knobs, 4 to be precise ! now you would assume that it would be 2 volume and 2 tone , one for each pup ? but i can turn the bridge pup up and that works fine , but when it comes to the neck pup you cannot turn that up on its own , the bridge pup has to be turned up also . is this normal ? does an