I pulled my rifle out of my bag to check everything out before going out to the desert to shoot. I look through my Falcon Menace 4-14 FFP and see what appears to be some kind of liquid on the lens. So I tried to wipe it off but its on the inside! It is on the same lens as the reticle. Looks like some sort of lubricant and its never been exposed to water. What can I do?