This summer i changed my outside air intake screen from a fine window screen to quarter inch hardware cloth.Now i can't burn the stove on a low setting.i have noticed the pellets drop very inconsistantly.The auger motor will run and nothing drops in.This will happen sometimes for 2 or 3 cycles than a couple pellets drop in then it goes a couple cycles and maybe a handfull drop.According to the manual if the stove drops to 120 degrees it will shut off so that i what i think is happening.If i shut the room blower off it will run on the lower setting.Just wondering if anone else with a EF-5 has had this problem.