He surmised the anthracite was a bit too dense for his particular engine, and it's clearly running better with lower quality coal. But I wondered about his choice of wood, and if seasoned white oak or locust would improve performance.
Do the next thing next. That's a pretty good rule. Read the tiny ad, that's a pretty good rule, too.
Permaculture Voices 1, 2 and 3 - all 117 hours of video!