Have you tried
www.rukind.com?
They don't have a lot of bass tabs necessarily, but sometimes you just have to go to the guitar tab section and they show what Jerry was doing, Phil was doing, etc.
For example, if you look up "Music Never Stopped", they give you what they think Phil does for the intro. They even have audio clips to help you out. Let me know if you find any other sources, I'm always looking for more help.
music never stopped
Phil Intro
(^) Slide Up (\) Slide Down (h) Hammer On (p) Pull Off (b) Bend
G-----------------------------------------------------------
D------------------2--0-------------------------------------
A------------------------4----2p0--3------------------------
E---12\2--0--2--0-------------------------------------------