I agree on the film plane measurement precision. It took me a whole day to get right. The rest was cakewalk. Giving the front more movements sort-of meant that I don't have to be so precise about it - I'll just adjust it parallel later.
This is what came out, with power drill being the only power tool and a caliper being the only precision tool:
https://www.flickr.com/photos/moribundworld/8962444804/

It is easy and fun. I am already starting on my next one.