I had the same problem with the levers not reaching. I was too scared to overtighten since I saw the threads were plastic on the camera. I wanted to cry because I knew it was going to be another month and a half before I could get someone to carry mine to the US and get me another one, I got the nerve to tighten more and it works perfect. So far just reading the whole manual for the camera and taking shots, now I'm trying to figure out what my mode settings I want to use, while waiting for the 28th when I get off this boat and go do some diving. I'll probably just get to dive in Rio for the first few weeks, very green water there but I'm excited for some UW pics.
Anyone know what thread had some of mymode settings that worked well? I know I saw this somewhere but not sure where and have been searching for hours instead of playing with my camera.