Making Perforated Panels

I began learning GH from last Thursday, so please bear with my simple questions.

I was trying to generate, say, eight perforated panels (A0, A1,…A7), with the holes on each panel having a unique radius, like the image below. I have a string with all of the 8 radii in a group of data. I was using the Divide Surface command, but there are two problems. First, the resulting points have a tree structure shown in the screenshot below, with {8; 2; 3}. How do I assign radius so that the six holes on the same panel has the same radius? The second problem is, the divide surface command generates points along the edges, too, where I don’t need any holes. How can I get rid of them?