My "assumption" would be that they were trying to reach the heat levels and be able to maintain the heat levels of the AeroTech (and I believed they accomplished this) but had to had to use a different approach. I remember when one of their engineers was explaning to me on the phone how they were going to cover the HAT 7000 blower and then put cooling fans on the cover to cool it down. Like I said enough was explained to me that I didn't want any part of it. I think Mikey or Jim said it best they said they should have left well enough alone with the 6008, a great basic machine that was not to complicated.