Looks like we all tumble on the same mistakes, maybe I will compile a list of common mistakes for the new builders to use as check list. Its all part of the learning curve and building what is a new an improved chassis. I will add this dimension to my book that now has some much pen and grinding dust on, I can hardly see the drawings.
Still, I also hold it as my build Bible as it has given a lot of pleasure and consumed my life for the last year. Maybe one day I will get round to reading it. By trade, drawings and NBS spec are everything!