This fall I picked up a used 25pdvc for my basement. https://www.hearth.com/econtent/index.php/forums/viewthread/78883/ Did a complete cleaning and installed up and out with 4". It burns great on 3 and above, but I can't get it dialed in for a low burn. I PM'd Mike a while back asking about the 3 lower settings and he replied 4-1-1 the PO had them at 2-9-1 or 1-9-2 can't remember. I tried the factory reset the other day and couldn't get it to work, after searching the forum(for a long time) I found the non ignitor boards use a different procedure. After sucessfully performing the reset it comes back 1-9-2 heat mode C. I thought AOT wasn't ever suppossed to be anything but 1 and 9 for LBA? Haven't started it yet to see how 1-9-2 works. Also gonna PM mike again. Any thoughts Englander peeps?