WhifField optima 3 to many pellets on low

[Drooby]

Hello everyone. New to the forum. Of course I am posting bc I have an issue am looking for some help. I have a Whitfield Optima 3 insert and for some reason recently on my lowest heat setting my auger dumps pellets almost constantly. For sure it is dropping pellets every 1-2 seconds which creates a large lazy flame. Right after I change the setting to the middle flame setting u can see a flame color and height change. It almost as if the actual auger feeds do not match the settings. I have changed the calibration settings some but does not seem to change anything. I’m I down to a control board as I suspect? I did put a new door gasket on this year but it was working fine for a couple weeks before this problem started. I did give it a good cleaning so I do not think that is an issue. The flame does change which adjusting the flute so I assume the exhaust fan is working as it should. I don’t understand why there would be an almost immediate change when switching from the low to middle setting? Any advise would be greatly appreciated. Thank u