Just tried CRYSTALMAN85'S patch idea above on the Zoom MS-60B with a few modifications playing on a P bass & it was very useable. My mods were on the BassDrive: Bass 1, treble 2, presence -3, level 40 for unity gain, & I lowered the level output of the 10 band eq to 88 for unity. You could ad more gain depending on which Geddy like tone/era you are going for, "Moving Pictures" would definitely call for more dirt.
I did name that patch geddy bass drive because I knew that geddy lee uses a tech 21 rmp rackmount in his later career. I also added the graphic eq model to boost mids. it's cool that you've done some adjustments. of course that's the point of this thread other than posting nifty patch ideas. it also allows talkbass members to use these patches and if they want to, they can make some adjustments of the patch ideas to their liking. I'm glad that this patch was very helpful to you. this patch was the least I can do to duplicate a geddy lee sound. and considering that you play a p-bass, you would definitely nail his sound with this patch.