don’t know but Larry Graham is one of those bass player who lets me speechless. this guy rocks in an interstellar level 
… and I’m not at all a slap fan but … well, yeah, what Larry Graham does just works so perfectly ! love this guy ! especially with Central Station
that’s pretty normal, it takes some time to know what you want, that’s perfectly fine. some trial and error involved. Also it’s really hard to describe sounds. The real deal is to find what pleases you. Maybe you just find the right strings for your tastes, maybe it’s just a part of the trial and error thing. In any case it’s a great progress 
by the way your bass looks cool, I like the flower ! I like the small motorcyles in the background too