I took the whole dryer apart and checked the coils, all the sensors, and thoroughly cleaned the entire blower and venting system. After ruling out everything else, determined it had to be the motor. I used the videos on Appliance Parts Pros for step by step on dis-assembling the whole dryer and to help diagnose that it was ultimately the motor. I ran into a common problem where the blower wheel would not come off the old motor so I knew I had to replace that as well. That too was mentioned and detailed in the videos. New motor and wheel now installed and dryer is running like it's brand new.