Unfortunately, I think I'm encountering the 'Y rotation bug.' According to Harbringer, one part of what I have to do to fill in the gaps is use four pieces at a Y of multiples of 45. You can see that the top bump reflects this. However, when I do this for any other bump (such as the top-left one), this happens:
Unfortunately, I think I'm encountering the 'Y rotation bug.' According to Harbringer, one part of what I have to do to fill in the gaps is use four pieces at a Y of multiples of 45. You can see that the top bump reflects this. However, when I do this for any other bump (such as the top-left one), this happens: