Following the reading of the cards, I expected a few different things:
1) I would simply get 1.5 or double the # of produce made.
2) the amount of cherries used would reduce instead to reflect
3) something to actually happen.
But, comparing to some sites that show how many cherries are normally used, and doing a few test spins, I find that I'm making the same number of produce as if I never bought the cards - no extra's, no discounts, nothing.
So, what or how does the upgrade actually work? It shouldn't need a literal tune up, as otherwise it should have a tinkering requirement to it or something. Am I just missing the effect somehow, or is it not working?