Atom 2.0 missing a screw?

Just bought one, when it showed up at my doorstep I brought it in and was inspecting it. It seems that one of the screws on the back, at the 4 corners is either missing or covered with a sealant. It could be to aid the manufacturer in determing if the case has been opened for warranty purposes or it could be a defect, primarily a missing or stripped screw. My concern is that if it is the 2nd, that the unit might leak at depth. Has anybody had this experience or have any amplifying information?

A picture would help.

Received word from Oceanic that the sealant was purposely placed their by the manufacturer for them to be able to determine if the seal is broken on the casing.-