Its Possibly a build-up of fabric softener on the moisture sensor bar, below your filter housing, that's causing this problem, use rubbing alcohol on a cloth to clean the moisture sensor bar first, and see if that resolves it.
Jake... thanks very much! 2 things... just as an FYI we do not use dryer sheets.... and from what I can tell, (utube) it requires a fairly involved process to remove most of the top and front of the cabinetry to get to the sensor... is this correct?
Jake.... It appears that the sensor drying issue is intermittent .....so I am expecting that at least one of the sensors is bad....In this case, I am guessing that I would just replace both beings as they are cheap.... Thanks again for your help.