So, haven't been able to get burn times any longer than 12 hrs, even with 1,1 settings and low fuel feed pushed down to 3 and plugged side holes. Will try adjusting the chute plate in the hopper as suggested. Is there a 'calibration' setting for this? (i.e. per design this should be 1" opening when closed?) Also, thinking about adding a millivolt thermostat. Does anyone know if these turn on/off (mine is 2018 model) with the thermostat or are just high/low and need to be turned on at the stove? Was hoping to be able to have a clean stove, full of pellets and ready to start via thermostat without intervention, for any temp drops overnight, for instance.