I made a brief mention of this during a discussion with robot inspectors last year (was it a teleconference?); the HS-322HD (found in the last two kits), is the correct servo to be using. The number 33322S is the
stock number of this servo (when using the Hitec/JR connector, which fits the robot controller)—maybe that's where the "S" comes from. FIRST never did get around to fixing the documentation last year, or this year, it seems.
Notify FIRST through the Q&A, with the relevant links to Hitec's page, showing the correct information. (
Here,
here and
here.)