3804 - robotic arm help

[Stephane Simard]

Hi,

How come in the "Big Blocks", the "raise arm" and "lower arm" blocks use the C
motor when it should use A motor. The "rotate left" and "rotate right" blocks
also use the C motor (as it should).

Anybody else ever built this model? This is the last and supposedly biggest one
from the RIS 2.0 .

This is the first time I build with the 3804, so I'm quite a bit confused.
Thanks