Anthony,

Mike is right. The DZ's need to be fairly close to being right to run well at all. You can be a little rich, or a little lean, but if it is too rich, you will get a nasty kick, and if it is too lean, it'll start knocking. It has a fairly wide range though on the needle and can be fairly forgiving. What you don't want to do is run it SLOPPY rich like you would a two stroke when you are breaking it in.

Arch