Call Arnie Huntley and ask if he is aware of any Van Wert Guru's in your area, his number number is 315-653-7883.
In the meantime... Did you start having problems with the fire going out before or after the pot was rebuilt? Do the rings appear to fit properly (no gaps), and are they clear of fines?
Are you sure the coal is feeding up the auger properly? If the coal continues to push up through the pot after the fire is out, it is probably feeding correctly. If everything appears fine with the stoker, I would check the timer to make sure it is working properly. It should run the stoker once or twice per hour to keep the fire burning.