Good heads up, but this is not a few minutes extra work. When I finished building my plane, I turned to page 1 of the manual and then went through every page of it. I checked every single bolt, nut split pin etc that I had placed, page by page. After each page, I dated it so that there could be no doubt in my mind that I had checked it. It actually took me weeks to do this.
In the end, I found one split pin that hadn't been bent, on an aileron. I always bend them a tad, just enough for it to stay in place, if it's a part that needs adjusting. So on a first flight I'm confident it probably would have stayed, but clearly I screwed up. I was both happy there was only one thing I left unfinished, but dismayed I left ANYTHING unfinished.
So yes, it only took a minute to rectify the problem. But it took weeks to find.