Chosen Solution
dryer takes four hours to dry clothes
Your air outlet is blocked or too long! Does the dryer vent immediately outside or does it have to travel a bit before exiting? Remove dryer vent line and use a shop vac to both blow and suck up any blockage! If no blockage, it may just be too humid.
aug 31st entry was correct, my dryer was pushed to far back against the wall blocking the air outlet.