More on Puzzle Joints

I have all my strakes done now. I had some sort of puzzle joint epiphany halfway through and the last couple were perfect. The first ones I did came out like this though.

You can see a little bit of a gap there, especially if you look at a larger version of the picture. Hopefully it doesn't completely undermine the structural integrity of the boat. On the first couple I couldn't quite get them to slide together smothly and I tried putting one down on top of the other and kind of popping them together like you would an actual puzzle piece. By the third set I did, I figured out how to push them together perfectly. I kept both pieces flat and just pushed them together. That sounds simple and obvious, but there was something about the angle at which you apply the force.