The spike at startup typically occurs because the initial “lighting” may require extra pellets (especially if you vacuumed out the ash and sucked up pellets). The fact it settled over time is great! My problem is the internal measurements are way off so I have to run a third party thermometer probe to get the right temp. Each time I change the temp while cooking I have to monitor the 3rd party probe to dial in my Traeger. The difference is not linear.