Hi. I have some questions about this bass. The bass is in good shape, almost everything is original. It has all of the fine tuners on the bridge, but one of the knobs is missing, the battery cover and the bottom strap lock is also missing. Have to change the potenciometer cause is half broken too. I´ve been searching all over the web to see if i can find the missing pieces with no success. Guess i´ll have to use new parts for replacement, but a battery cover that´ll fit the bass is nowhere to be found. My question is, where can i find one that fits. also, why does the bass sound so low without the battery. Thx for your replies in advance.