I've got an Ibanez RB850 that I'd love to put back in live action. It currently has the stock pickups/electronics which sounded decent in their day, but now are hum and buzz monsters. I currently play and Ibanez SR500 and really like the sound of the stock Bartolini MK1s in it. Any suggestions on what to use in it? I'll probably have to stay with passive as there isn't a space to put a battery for active. Thanks in advance!