Many, many....many folks have made the mistake of missing that little bend on the end. It's on the drawings, but you have to look for it. To be honest, RV builders are pretty spoiled when it comes to detailed parts drawings - we hardly have to ever look at them ( unless you're building a -3 that is...). We have to most of the fabrication of parts on the brand "S" we're working on, and spend a great deal of time decoding parts drawings in advance of cutting material - it's east to build flanges backwards, and you can guess how I know!
Paul