Hey E:pp:ik, i've just read ur blog, very interessant !
I have finished now my third x0xi0, i have to make improve to resolve that f.....g click problem to the 2 first x0xi0 and after i will begin the new and last one with custom' pcbs !
I've read that instruction still not written by Brian, i think that i will begin like you with top and I/o boards and atfer see with custom pcb's !
I plan to do it next january ! we get in touch to give us advice about our parallel building
Merry christmas custom pcb friend