A) Correct
B) 3 pips I think. one for the move, one for both corners moving less then max, one for clumsy irreg doing so
C) Correct
D) Not sure about it costing 4 pips. To me, "both corners move less than full move" doesn't apply to a partial wheel, as one corner doesn't move. I think this would be 3 pips, one for moving, one for the wheel, one for clumsy irregular wheeling.
If you combined the wheel with a partial move straight ahead, and still didn't move your full move allowance, eg you moved ahead 80p then wheeled one corner 100p, I think that would be 4 pips. one for the move, one for the wheel, one for both corners not moving max, one for clumsy irreg. I'm pretty sure that irregular ineptness only applies once, not once for each evolution.
Hope I've got it right!
Bryan