I've got a Kuuma, and the smoke sounds similar to your Egg. Light whispy white smoke when I'm starting it, but once it's going (after 15-20 minutes) the exhaust out of the chimney is basically clear. When I add wood or stoke it, it'll be a little white for a few minutes before settling back down.

This is awesome!

Do you happen to have the code or wiring diagram posted anywhere?