I've got a 2K Adventurer (Mutato) that's identical to your '99 and love the bike!
Be sure to read through the 'Known Issues' forum here and you'll find a bunch of info on the potential problems of the breed. It's a pretty short list of 'real' problems and a lot of 'preference' issues but will help you identify anything that might go wrong.
I'd highly recommend running some carburetor/fuel injection cleaner through the fuel to clean out the carbs and also that you get the carbs balanced. You might find that makes the bike even more likeable!
Also, if you're having a problem or even
think that there might be one, post it here and we'll do our best to resolve it.
Jim