I have an Enviro Mini (new January 2008) the control board was replaced 6 months ago (auger would cycle erratically), but now when I try to light it the auger cycle 3 times and the system shuts off and the #2 burn control light blinks until I hit the on/off button again; sometime the process take 4-5 tries until the stove finally lights. The manual states it's a vacuum switch issue, but if the switch were faulty wouldn't that prevent the stove from ever lighting?