I have got two potential seller letting go of their Katoom 990A and both bike are 2010 registered. Both have the same 50K km mileage range and selling almost at the same price range. One comes with Leo Vince exhaust system and Safari tank. The other is bone stock. If you were to ask me, i am obviously leaning towards the one with the Xtras. Oh well, cosmetic aside. What to me is important is the engine. Would like to ask you experience guys on what to look for when viewing the bike apart for any leaking parts. Sorry cant find any in the search engine. Kindly help. Cheers.