I had already cleaned my vent out well from dryer to outside. But what I had not done was to unplug the unit and inspect inside the dryer. Remove the dryer vent duct and all around the drum, pulley, heater duct, and surrounding area. This should be a wakeup call to all those who have never done this. How the unit has never caught on fire is amazing. The design of the dryer is surprising as to how the heater coils are so open to all the lint that builds up inside the unit.
Owner beware inspect inside your dryer today!
I replaced my moisture sensor while I was at it.