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It was intentional (more or less), as it's mostly clearance in the horizontal plane that matters for FDM. I haven't tested all the possible combos of parameters, so inspect it a bit before you print. Frankly, if you're going to print it in SLS, you might want to pop open the scad file and make a few deeper changes. The main one I can think of is the 45 degree cutoff of the central pin. I needed that to make it FDM printable, but you can keep the whole pin for SLS. Still, I have the feeling it's going to be pretty wobbly when you're done, but I'm curious.