Grasshopper- How to 3D panel on surfaces going in a certain direction

I created a flowing type of surface in grasshopper. Now I have added 3D panels onto the surface using surface domain grid connecting to Morph 3D component. However, I want all the 3D panels to go straight downwards rather than following the flow of the surface which the most of the panels intersect each other.

Edit: Was able to figure it out but is there a way where the 3D panels sit smoothly on the surface rather than being straight and angled?

Some pictures and/or a Rhino/Grasshopper file would be useful.