I got my Mimeo done and working finally. I had a few chips that seemed good/tested good but in fact were causing issues and it took me quite a while to debug.
Nevertheless, It's working great now and having loads of fun playing the original Apple 1 programs from tape - loading from my iPod and a panasonic cassette recorder.
Thanks for all the help from the folks on the forum!
I thought I'd post a few pictures of the case and Mimeo (wood working isn't my strong suit...).