I just got my mk5 3.6-18x44 today and have an issue I'm uncertain of. The scope turret locks in at zero. I push the detent lock in to release it and start turning. At one revolution the detent becomes flush with the turret body but the top indicator button doesn't move from its original flush position. On the second revolution it doesn't make it all the way and stops at around the 17 mil mark. No third revolution. Is there something locked in at the factory or something? I am not going to force it beyond its stopping point at 17 mils.