paneling without any distance from attractor

hi, I have a simple problem but I don't know what it is!!

I want to distribute 4 3dpanels with "morph 3d list" in grasshopper and I give it a curve attractor ,and I want it just to justify the panels but it makes it with a lot of distance, what should I do to not to effect the paneling and cover all of it's surface?

actually I want a triangular effect! It gives me a circle ! tnx.