Mounting the blocks was fairly straightforward and I did it with the stock caps in place. Some filing was required for the blocks to clear the screws holding the stock caps. Getting the pin holes drilled to line up with the holes in the frame was a little tricky. As you can see I labeled 2 of the pontoons to avoid confusion. After mounting the blocks I used the frame as a guide to drill the pin holes in the blocks. If I make another set I will video the process.