I found the screw with a magnet, and was back flying right away. And yes, the blades are getting a little ragged.
I'm curious how you find the overall battery life to be. I've owned my Syma for about 8 months, and now it won't take a charge. When I got it I think it was $20 from Amazon, and I suppose i got my money's worth...but wish it would have lasted longer.