I have a Leupold VX-2 that has been sitting on the shelf in my gun cabinet now for a couple of years. I pulled it out yesterday planning to mount it on a rifle and noticed that it appears to be leaking an oil type fluid out of the front where the objective attaches to the tube. I didn't think they have oil in them? Just nitrogen filled? The glass still appears clear and I don't see anything else wrong with it. I thought maybe something had spilled in my gun cabinet but the only damp spot on the carpet was right where that scope has been sitting. It's not a lot just enough to notice that something is leaking. Has anyone ever had a Leupold leak before?