Unfortunately the cutout for the nut didn't fit the nut on my PB+. This is a great design, I'll try and remix it!
I'm really sorry about that, if you would like i can make you a PB+ version if you send me the dimensions!
Thanks! I just converted my PB+ to use metric Z threaded rods ( absolutely worth it!). So I'll need to send dimensions for the M8 nut. I'm out of town for a while, but will do when I get back. I really like this design and would love to use them.