Spin wheel chances

I saw a level2 synthesizer stone on the wheel after completing a level. I really needed it. So I started spinning over and over again, 6 times to be exact. I ended up wasting 30 coins only to have the wheel land on the same exact thing 4 times (I did spin myself at different Intensities and auto spin twice)!
I think if I'm going to spend real money and my time and effort into a game, I should get my moneys worth. Maybe increasing the chance to get a rare item should increase the more times you spin it.
tl;dr change the spin wheel chances. Increase the chance to get good items the more you spin.
Thanks for reading and reply if you agree/disagree.