I'm really scratching my head here. After seeing your fine prints I feel like I must be able to duplicate the same with my hadron, but so far that hasn't been the case. I think I'd be pretty close if not for this dang wobble in my prints. I can't figure out what's causing it. I upgraded to acme screws and some nicer couplings, then I tried printing nopheads couplings from here.
http://www.thingiverse.com/thing:9622 That helped quite a bit, but It's still there to a lesser degree. I've taken my x-axis off and made sure everything is straight and that it fits correctly over the vertical pieces of makerslide. I'm taking it to my local hackerspace tomorrow night to see if the gurus there can help me out. Here are a couple of pics of my progress.
This was before the acme screws and before dismantling and double-checking my x-axis connections to the vertical makerslide.
After acme screws and checking for correct assembly. It takes patience with these craptacular cell phone pictures, but you can see that while it's better, it's still there. Hopefully I'll have better results to show after tomorrow's exorcism.