Originally Posted by Restrorob
If your that "picky" you should be checking your filter way before 50hrs......
Point taken but I do check it. About every 10z more when it's dry and dusty or I'm doing leaves. (Every day). it started fairly quickly and peaked around 50 hrs . It has gotten a bit worse but has kind of peaked out. It does not look as bad as the in in the op's pic. I appreciate your input greatly