I think we mean something different and we don't understand each other. The picture a few posts above I have seen. But a lot of the parts which are shown there, I already have in the original model I bought yesterday. So if I buy al of the stuff of the picture above, I will have too much because I already have a lot of it from the original model. I just want to know what I need to add or replace to make the modified boom. I take parts from the original boom, and add elements to make the modified. I break the original boom down, use those elements, and add elements to make the modified boom.
I am sorry for the misconception, to me it just appears as a waste to order parts I already have. Its not a cheap buy, apparently.
Or do you mean I combine all the elements from the original boom, with the elements from the list above? In my perception then I can make a boom twice the size, because then I have almost twice the amount of elements.