Not necessarily; ever put together one of those Saga electric guitar kits? I've spent maybe 5-10% (out of maybe 15-20 total build time) tweaking and adjusting,

Not necessarily; ever put together one of those Saga electric guitar kits? I've spent maybe 5-10% (out of maybe 15-20 total build time) tweaking and adjusting, finding they didn't drill all the holes in the right places, etc.