This is my first year with the EKO 40 and I haven't been able to reach a temp above 168. I have adjusted my primary air adjustment to just less than 1/2 in. secondaries are at 3 trns air inlet is set at an inch and a 1/4, fan speed is at 50. I usually take my temp up to 150 when starting then start gasing. But my temp just doesn't go up. I've tried various settings and nothing works.