I've got an '85 Kramer Focus, not a particularly fine instrument but it was my first bass ever and I still like the way the neck feels. Anyway, it sat around for 6 months while I was out of town, and when I came back the neck had a backbow to it. It seems most noticeable from about the 5th fret down to the nut, and it buzzes on notes played at the first and second frets. So I go to loosen the truss rod to let the string tension induce more relief, and the truss rod won't turn, not a bit. Now, I've made adjustments on this neck many times, and I recall it's been more difficult to turn than any of my other basses, so I figured once it got started it'd be alright. And so after tapping it and knocking a bit to, I dunno, loosen it up a little, I used plenty of muscle to try to get the thing moving (I know, I know, shouldn't force it, but...). And I thought I got it to trun a little, but I had actually bent/twisted the blade of the (flathead) screwdriver. So it's really not budging. It's not worth a lot of money, just has a lot of sentimental value for me, so taking it to a tech for anything major would be hard to justify. Any help/suggestions would be greatly appreciated. WD40???