Hi, I have a Traeger grill and I was looking at customer service reviews when I stumbled on this site. I like my Traeger but I can't get it over 350 on this batch of Traeger pellets. Wait time on their customer service was 14 minutes the first time ( I didn't wait) and nine the second but they didn't answer after 15 minutes so I hung up. I see the reviews are not good. How do I get this grill up to 400 degrees?