Flam Factorial is something to work on flam/cheese inverts in a fun way. As you walk down the number of notes in a bar, the even-time bars have inverts, and the odd-time bars just alternate hands. There is a strong tendency to approach accents and diddles differently when you're having to upstroke quickly, versus when you're playing comfortable, alternating sticking patterns.
There's an extra layer of difficulty, too, in throwing inverted flam-taps or cheeses into an otherwise open and comfortable check pattern... a lot of invert exercises (Susie, for example) allow you to maintain a base level of tension in your hands without noticing how it affects tap sound quality, because it's a lot of inverted flam combinations. Throwing contiguous taps in between the cheese inverts should open your ears to how much the invert motion can cause tension that distorts the tap sound and diddle quality.
