As I lay about parting sets out I realize that you have slipped a few oddities in the bags in a somewhat random manner.
These parts as listed in the Peeron.Com database are:
'Technic Brick 1 x 2 with Axlehole' (32064)

and
'Technic Brick 1 x 2 with Axlehole - Type II' (32064b)

DO NOT mix well in my creations.
Why are they often substituted in set inventories? It's often impossible to predict which will be included. I can understand the usefulness of Type II if you are concerned about rotational torque (I think), but since that is not the focus of my building I don't need them. Set pictures and catalogs might show one and then I get the other LIKE IT DOESN'T MATTER... IT DOES. The horizontal and vertical cross pattern of the first is VERY USEFUL in my Castle MOC model building and I actually look for sets that have a high repetition of the first example.
LEGO often disapoints me as I rumage through my newly purchased parts to find that they have no regard for which one goes in a set.
So can the kind folks of LEGO please provide me with a mailing address which I can send all the useless Type II bricks back for a replacement with the original example? I'd really like to unload in favor of the superior part.
Or at least send me a 'Technic Brick 1 x 2 with Axlehole' (32064) Detector so I can figure which sets to avoid. Or perhaps you can use one yourselves at the factories???