Electric Guitar Kit DC Style : Bumps in the road for a kit newbie

I'd not built a kit guitar before, but always wanted to, and I'd always wanted a double-cut style guitar, so this seemed an inexpensive way in. Out of the box, all seemed fine at first, until I realised the instructions were subtly different from the collection of guitar parts in front of me. The instructions were for a similar model and one assumes the manufacturer had thought it 'near enough' so as not to go to the expense of authoring a separate document. However during assembly certain things became a matter of guesswork. Why was there a black unsoldered earth lead with nowhere for it to go? Why was the output jack routed through the front and not the bottom? There was scant information as to which pickup went in which position and the same for the wiring. Despite these challenges I was able (after painting) to put the guitar together in an afternoon, and the resulting instrument was easy to set up (no truss rod adjustment needed) and was a pleasure to play. I really think though, that the instructions were awful and a novice with perhaps less experience of working on guitars than I, could have been in real trouble.