Baz! Its not 100% perfect buts its better than it was in your video.. and i think thats for a few reasons...
1st. the mail bag it came in was covered in oil (which can only have come from one place)
2nd. i assume it leaked out cause the bag was sitting in a cold aircraft and then the hot sun in Sydney the other day, so with that in mind, i hit it with a heat gun and then let it sit overnight
put it in this morning, and while its not 100% perfect its HEAPS better at holding the supercharger boost than my old unit
im only getting 10-11psi on the supercharger tho so that might be the next issue to address
anyway, here's a vid, its shaky but i think you can see what i mean
http://members.iinet.net.au/~martinm/newvalve.3gp