For calculating height with no stacking lips, I think it should be "7 * 6 = 42 total height" instead of "7 * 6 + 42 total height" <img width="1706" height="1212" alt="Image" src="https://github.com/user-attachments/assets/3814b405-fb6a-40c8-acbe-c79c9463e662" />