It's actually my fault, sorry! They almost had it calibrated until I landed there a few weeks ago, and in my never ending quest to flatten the hump in the touch-down area, slammed onto the runway so hard that the elevation changed (success at last, with BOAC's help), and they had to begin to calibrate it all over again.
I have a lot to answer for at MAN, a few years ago I didn't de-crab so well during a cross-wind landing, and the whole damned runway twisted! They had to change the Runway number from 24 to23 as a result, sorry again! (There was a wicked rumour at the time that due to a new world-wide Magnetic Variation database which caused it, but the truth is that in MAN's case it was my fault)
Whilst in confessive mode, I do have to admit to messing with RWY 05 (Confession is good for the soul). I got so low on one approach there that the ground shrank away from me in terror, to such an extent that people have reported increasing Radio Altimeter readings during normal descent to the runway, I'm sorry for that too!
I have a lot to answer for at Manchester, it's probably just as well for the world, and Manchester in particular, that I retire in 2 years.
I beg your collective forgiveness,
Old Smokey