TrueJim
Master Black Belt
So in essence it's really a training or procedural problem.
Largely true, yes.
If it's an identical sensor used for each location but simply calibrated for that location and desired level of impact - then you shouldn't get them in the wrong place...
I'm not positive about this, but I think age of the hogu and sensors plays a role too. A new hogu is stiffer, worn batteries are weaker, etc. In principle you are correct, but in practice you'll see hogus that detect a hit too easily, or detect hard hits not at all. (This is especially true of Daedo, less true of KP&P.)