I agree it must be because the schedule is new to me, I fly higher than normal in order to get extra space. Hope it will be so, because I was planning to use 4500 mah batteries next year :-)
I think the half clover should have a line before and after the roll. In fact you must, because 1/4 loop + line + roll + line + 1/4 loop must fill the space of two half loops, and that's a lot of space.

I also find the top hat difficult. One thing is the size, and another is remembering which way to roll so you come out on top.

Yes, the Z is also very hard on the sticks, the last pull needed more elevator throw than I have used for P11.