I got my new 360 a few weeks ago. The windows drop 3/4 of an inch when the doors open. When they come back up, the bottom 3/4 of an inch is covered with oil or grease. I wipe it off, but the next door opening, and it's back. There is also the same stuff where the windows meet the seals at the top and rear of the windows. The seal is a kind of felt material. I hope this will go away with time. Anyone else experience this? How do I get rid of it?