In some cases, im able to see the script used, like this test: http://www.webpagetest.org/result/120405_16_3VHCR/
But for others, i’m not able to see the script. And i did not set it as private:
Would be nice if you could take a look.
You can only see the contents of a script if the server recognizes that the test was submitted by you (just as a failsafe in case someone put credentials in a script and forgot to check the sensitive box).
The best way to be sure that WPT knows it is you is to be logged in when you run tests. Otherwise it falls back to using a cookie but that can be hit or miss and only follows you on a given PC.