2 sets of radiobuttons

[woooee]

I want to be able to choose 1 from each set

The reason you use a radiobutton is that you want one, and only one. selection. You will have to have the user choose one from group "A" and then delete these and present group "B". It would be more straight forward to use chechbuttons and when the selection is finished. check that one, and only one, but is selected from group "A" and one from "B".