Reaching fuel cocks
The 172 that I'm training in has an original fit four point harness. It's not inertia reel but the old fashioned tug the straps and make them tight type. If I do up the straps to a comfortable tightness I can't reach the fuel cock.
I don't sit miles from the controls, I like to have a good knee bend with my feet on the pedals, I'm 5' 11 and my arms as far as I know are normally proportioned for one of my height. If I loosen off the shoulder straps to their full extent then I can reach, but that rather negates the idea of having shoulder straps. It's my first a/c, do all a/c have similar quirks? It seems a bit odd that Cessna would put the fuel cock where it can't be reached.
I seem to remember that John Denver died because he couldn't reach the fuel cock in his a/c.