I have a new to me Englander 25-PDVC/55-SHP10. The top auger won't feed in normal operating mode. I have reset the control board. The bottom settings are set at 6,4,1, and in mode D. I have tried bypassing the pressure switch.... nothing. I swapped the wires between the top and bottom motors, and it will run then. It will also run in diagnostic mode and if I press both the on and off buttons at the same time. Thermal sensor bolted to the back of the firebox is tight, hoses to both pressure switches are nice and soft, no hopper safety switch on this model. I am beginning to think it may be the control board, but was wondering if anyone else has any ideas for things I can check before I spend 300.00 on a new board. Thanks everyone.