This bit from the extensive HB review thread.
"who had the standard Huky 500 configuration with the stock IR burner. In comparing notes, he was far less successful in getting 12-14 minute roast cycles without charring the beans, even when the charges were reduce to less than a pound. Conversely, I was not exactly sure what aspect of the stock setup was the cause of inferior results for him.
However, recent feedback from other early adopters in the US seem to indicate that the main reason the stock Huky configuration doesn't work as well is due the stock portable IR burner."