Did you untwist the hose before or after screwing it on the reel? It looks like your brass fitting is solid, without a rotating nut. If so, you need to screw it on the reel before untwisting it - or get a new hose fitting with separate rotating threaded part. The adapter you show in the second post should avoid the problem (as long as you attach it to the hose before attaching to the reel), because the threaded part rotates freely on the hose and avoid twisting it as you attach it. They are not completely foolproof though, because as you tighten them, the friction of the washer tends to make the hose twist with the threaded part. What I do is twist the hose back straight, while holding the nut part still. Sort of a two handed "ratcheting" motion as it finally tightens.