I found a bug in wave 19. I had more than enough runes stored up to kill off the summons, and it just would not let me use it. I think it may have happened bc I had enough of them stored after the end of the previous wave, but I'm not sure.
I think there's an error in your description of the Logical Expression Unit. OR REG ANQ should add up to 7 (0111) with inputs of 5 (0101) and 3 (0011), not 6 (0110)
Thank you. We will check it.