Where I shoot there are four of us with MK3's purchased in the last 6 months of each other from the same place. Two I know of have lateral movement on the side wheel from side to side like when you check a wheel bearing on a car, both with Rowan wheels where mine is solid.
One phone call I made to the shop I purchased from, was "how the standard Nikko side wheel in the box that has a location peg for the scope location was 15 yards out indicated on the wheel on an actual measured yardages?"
I was also told "oh you have a good one & the scope was not originally made for FT & it was from a batch of scopes purchased after the tsunami in 2011 but made before it, that's all he said!
Six months on they are now £75 more expensive!