Thanks for all the tips...I tried the wipes and finally "screwed my courage to the sticking point"...no pun intended and popped off, first the M, it's clean as a whistle now, then the L, same result, but the K...didn't come alone..that little round point thing flew off too but I found it before Cassie (our dog) did and it went back together just fine. When I get brave again, I'll do some more.

I'm just not very mechanically inclined.