Forum:Are the white mushroom drop percentage correct?

I'm playing Kingdom Hearts HD Final Mix and according to this entry for the White Mushrooms (http://www.khwiki.com/White_Mushroom), hitting a Mushroom with an elemental spell based on their actions three times gives a 40% drop for an elemental gem and a 20% drop for the mystery goo. For example: cast fire each time the mushroom shivers, and get a Blaze gem after the third time. The thing is, I've been at it for over an hour already and the white mushrooms have dropped more mystery goo than any elemental gems. As of this writing, I have one blaze gem and 12 mystery goo. Seems to me the drop percentage is really Mystery Goo 40% and element gem 20%.