My band has our first gig on May 4th, as much as i am excited i want to sound good, but i have a problem a real bad one, FRETBUZZ. i have it on all strings bar g, from the 7th fret on wards with 7th bein the worst then it wears off and sometimes i can play past the 7th without it but sometimes not.I need help guys, i really dont want to have to buy a new bass haven't got much money im only 15

. As time goes on i plan to probly upgrade the bass i have now Encore PK40(p-bass), rather than buy a new bass or unless i find a gem of an olp MM2. How can i fix it??
Thanks
Greg