I'll take a guess that you bought the bike from RussianDave in NSW. If that's the case, judging from what I've seen of other bikes he's sold, yours will be a bitza and a complete rebuild will be in order. However, the basic bike is solid and parts and improvements are fairly readily available. Have a read of this http://bcozz.multiply.com/journal/it...-Jiang-project
and copy it to your computer before the site goes tits-up.