Magitek Operators helps

[Viladin]

I have a few questions, to clarify a couple things.

First, in the Magitek Armor ability, it says that I use the size, shape, movement and physical ability scores (STR, modified DEX) of a standard magitek. What is a standard magitek? Is it a empty large sized base frame from the magitek PDF, or an automaton inflated to size large?

If it is a large automaton, does it gain the other bonuses that would come from that size change (namely STR improvement and DEX penalties), and does it have equipment slots as a normal large magitek?

Also, shouldn't Drive be added as a class skill as a part of the Magitek operator archetype?

In essence, I need to rework the archetype because of the magitek changes.

Drive is already added because of Magitek Operation feat.