Problems I'm trying to get rid of

[Supernaut]

I'm trying to get my speed up to a good speed on bass. Think like Stvee Harris Ace High outro kinda speed. Thing is, it sounds crap and it's really annoying me.

Problem 1: the notes are horrible. They're really short and really quiet. Any way you can think of to help me get them the right "strength"?

Problem 2: vibration from other strings. When I switch strings, the others are still vibrating ever so slightly. This is alright in songs because it sorta fits in with the vibrations from other instruments and isn't noticeable, but I stil wanna get rid of it.

any tips?

[randyriot]

put your picking hand's palm to mute the string that vibrates to stop it ringing quickly while switching strings or just let it ring, i guess. try different things