That is really nice work David. Your degreaser looks like the HD-26 from Knight. If it is and it gets the fans that clean, I might try it again, we never had any luck with it.
A good way to stop the grease from sticking like you were talking about is to use an upstream injector with dish soap while you are spraying.
I was asked to take that picture off the board, but I can email it to you if you want. Josh gets really offended when I show pictures of him in his private life and he doesn't seem to understand that out here in California, we have no problem with the fact that he likes to have sex with other men. As you can see from the picture below he has a nice family and I would hate to ruin that for him.