It doesn't look like your FUEL generation went up too much despite adding in 7 slots. Is it because your cards staked weren't as powerful, and are you earning enough FUEL to play in the season without having to buy any?
As far as I know, the cards that won't be added are the lowest fuel generation ones. I'm not sure about it thought @libertycrypto27 can answer.
Yes in the 7 slots I put cards that produce little fuel because I only had those available but when I will buy more packs of cards I will be able to increase my production more ;)
!PIZZA