We picked up an old Harman E last week and it's a great little stove.. it's completely different from the other Harman we have and learning how to use it. I have emailed Harman directly to see if they could send me a user manual but hoping someone here might have experience with them. All I have to go by is the 3 pages someone posted in another thread on this forum from 2008. I know you close the damper for wood and open it for coal.. does the air control lever control the amount air coming through the bottom vent I guess is my biggest question. And if someone here happens to have a pdf of the user manual I would be forever greatful! Thank you!