And Mike, have you ever tried "lamp oil"? It's the stuff they sell for those decorative oil lamps with the 'hurricane' globes. It even comes scented so your plane can make your flying site smell like a pine grove.

It's a serious question. I'm sure I read about people using it, but there weren't (or I don't remember) any details.

Can you list an address or link for Ultrasmoke?
Dennis-