I have Flea’s signature series Roadworn Fender Jazz Bass. I’m running it through an Ampeg SVT. I love the bass and it sounds great a lower volumes but when I try to rehearse with it, using my big rig, it’s sooo noisy. I’ve tried shielding but not much difference. Should I replace the pickups? If yes, then with what? Again, I really love the bass and want to make it work. Any suggestions would be greatly appreciated.