Stephen H , Feb 26, 2003; 12:39 a.m.
Just buy a new lens. (There, it's said). Seriously, if you can take the thing apart and put it back together without damaging anything or getting anything backwards, you'll probably be able to figure out the problem, too. Figure it's essentially worthless right now, so have a whack at it and you can't lose. Seems like I recall someone recommending to video the disassembly to help with reassembly.