Regarding Theories about RNGatchas...

I have Draw ~30x10 times yesterday, and after I got 3 (or more) Bronze (3*) in a row I spend 5 FG for a Single Draw (new Gatcha) and get... a Bronze... BUT note I buy more space for my inventory (2 FG for +10 space) between the last Bronze and the special Gatcha, which maybe cause the fail.
I also get an Ampy during this drawing session, then I did a single Draw again (new Gatcha), and I got... a Gold this time (the beautiful Gardenia (New one for me))!