I thought the same thing about the center balsa piece. At first I wondered why the original was done that way. I then thought that some builders wouldn't be able to get a good fit and would end up with a bulge across the length of the fin. I doubt I'll ever fly mine on a C motor, so I'm happy with it like it is so far.

I've built the escape tower legs and I'm now on the center support structure. I got tired of doing the tiny detail work so I ut it away for a while and I've built a couple of regular rockets like the Nike-X to rest my eyes.

I'll get back to the LJ II in a few days.