I just inherited my grand father's deer rifle (Browning A-bolt 7mm rem mag) and it has a Swarovski Habicht Nova 3x12x56 from the mid-late 90's. Problem is that the magnification and turret caps are frozen. The rifle sat untouched in his collection for several years before his death. I am thinking of just putting some penetrating oil and seeing if that will free things up. Does anyone else have any other suggestions?