Hmm, I like to play more with the ex hat callback. End a combo with b321 hat trap, or 21 is also an option in the corner. Then pressure with 112124 do ex hat call back and then go for 11212. Mix that up with stagger strings like 1, 11, b3, grabs and d4. You can also do 112124 hat trap and if they respect it do 112124 hat callback and challenge them with ex spin after the callback. IF they respect it continue your pressure.