Did you reset zero on the turrets? You say you have 13 mils vertical travel - so, at zero, the scope is just a bit above center on elevation travel. I don't own a ZP5, so I can't check on my own scope or anything, but it sounds like maybe the turrets weren't reset back to true zero somehow?
"To set the knobs to zero after zeroing your rifle, slightly loosen the screws with a 2 mm allen key. About
half a turn should be enough. Turn the knobs to the
zero position (the indicator windows must be black).
Tighten the screws only hand-tight. It is advisable
to hold the shorter end of the key to avoid too much
torque when tightening the screws."
Basically, if it came from the factory with zero set so that with the black indicator showing and the turret set to zero (ie, turrets at first rev 0) is at bottom of elevation travel, you could get to this state. It would basically allow you to zero the scope the first time without having to loosen the turrets to dial under the zero stop, but if you had to dial up enough to zero, it'll be showing the second rev indicator. When you reset zero, in theory, loosening the set screws and then turning the turrets all the way back to first rev zero (and then retightening the screws) should cause the indicator to go away and also reset the zero stop correctly.
This might not be helpful, but without assuming you're familiar with these issues, this might be what you're seeing?
