That tilting looks weird. Get that sink off, put new thermal paste on the chips, and put the sink back. Better leave the side casing (both parts) and top plate off and have the fan blowing down on he sink, do the last only when you're really sure you want to run it without the side casing. Much better cooling and you halved the noise too. I get about 10-13 degree C. above ambient temp on a heavy overclocked jalapeno this way.
Alright. I'm going to try doing that this weekend.
Also, is it OK if I leave the top plate on? I like having the BFL logo, heh.