Just to be sure I understand you, So you are saying that preheating (like most WK’s) increases the amount of water cracked to Hydrogen so it makes a stronger orange flame? Also, How does pushing help more than pulling?
Also, this thing seems to be making a very short bridge just above the brake rotor char bed area. Usually, in my experience with WK a bridge tends to be more obvious and taller. But I think it is bridging some, just a very short bridge that is harder to feel when you put a poker into it. I think this thing may need slightly smaller wood than the WK or it needs to shake and bounce going down the road behind a vehicle.
Jakob’s new chunker is making very cracked up wood so there is an array of sizes to the wood. Maybe we can find a simple way to sift it out to size it for different units.