That is correct. On the pro their is only one controllable gate. The Le was the only version to get two controllable gates. I have an LE but pinball news did a review on the pro and has a picture about a 3rd of the way down. http://www.pinballnews.com/games/transformers/index6a.html
P.S. - I know someone local that would probably want that machine if it was priced right. I.E not brick and mortar pricing If that is doable let me know and I'll get you his info and will let him know about the game. He doesn't visit pinside much (if at all).