Blend 5x5 grid twisting about the center

[#1]

Hello, trying to follow the tutorial linked below to create a Dick Nelson (Albers' student) Color Matrix:

https://youtu.be/gQO1Q-Q4DAo

When I try to blend the 2 grids, Illustrator twists the grid around the middle as opposed to creating a square grid.

Thanks in advance for any advice!

John

[#2]

Hello, trying to follow the tutorial linked below to create a Dick Nelson (Albers' student) Color Matrix:

https://youtu.be/gQO1Q-Q4DAo

When I try to blend the 2 grids, Illustrator twists the grid around the middle as opposed to creating a square grid.

Thanks in advance for any advice!

John

[#3]

Did you expand the 2 blends before blending again?