Boat out of square - to be honest, I've never measured mine. My boat's not glued, so I figured no matter what it was, it would be different the next time I measured it. In the grand scheme of things, I don't think 1 1/2" is a lot (I'm assuming the difference is in the diagonal measurement). Assuming the hulls are level and parallel, and using some basic trigonometry, one hull is about 0.79 inches ahead of the other. That's about 0.4% of the boat length.

What's sloppy about the tiller connectors? Up and down on the pin? Are the rotating parts on the ends of the tillers wobbly? I've never had any issues with the 20-style connectors.