I fixed that in my post because it went from 49 to 40, so i assumed that the poster meant 50.What a mess this turned out to be. It was a really great idea though, my compliments there. I saw Cinderella's Royal Table drop from 50 to 40 in one post, so I'm thinking it isn't working as you'd hoped.
Do I understand how this works: You add one point to the score ONLY for the restaurant that you think is the BEST. You subtract one point from the score ONLY from the restaurant that you think is the WORST?