Hello all, I have a rt680 and I'm having a few issues. First, it popped the fuse on the circuit board. I replaced, and began the cook. Temp was set to 215.. I checked actual temp button ,and it showed 250+. I then adjusted to 250 and rest of cook went fine. Contacted rectec, they said to change pellets first. I had a small amount in the hopper, so I tried to burn em yesterday. Now the temperature doesn't go above 74 deg after running for 20 mi