Yeah, just some nice cheap ones will even do as long as they are good quality. From memory, I'm pretty sure I had the exact same problem until I replaced it with a hard piping kit and even gained me some extra wasps.
I guess the question now is... what would you have done with 30 mill?
I would personally stalk the other three winners. Kidnap them. Lock them up in my rape dungeon. Phone book them until they give me their account details so I could get the rest of the 100 mill.
Yeah, if you buy unregistered and you know you have the winning numbers, take it to the head office at Homebush or where ever the are now. They will keep it private if you so choose.