You should take your lint filter trap do hickie out of your dryer and run it under hot water. Does the water pool up on top of it? That means your dryer sheets have been coating the screen. This causes a buildup of exhaust heat in your dryer and could lead to problems. A simple solution is to wash your screen with a dishwashing detergent like Dawn (that has a degreaser) then watch the water go through with no issues!
I have several more tidbits that I'll share as I go, I thought that one was pretty good. No water went through my screen at all before washing it!