The last block on the bottom is to add some length. Otherwise the kickstand is not long enough. I already had the kickstand so I did not order another one. If the kickstand were 1/2 to 3/4 longer then it would not be needed. I am going to make 3 or 4 more then I will be out of aluminum. The problem I run into is when I compare the cost to what you can sell them for, it is not a good deal. After all it is just a kickstand adapter and I do not have automated equipment to make them.
Old fashioned machine shop.
Kenal0