I just bought the Bentley swivel titanium 14 inch swivel. I’m 6’3” and the wand seems very short. You can’t lengthen it only shorten it if I’m correct ? I like the wand but I feel like I’m hunched over using it. I got it so I’d feel less stress on my back seems like it’ll cause more. I measured it and it’s about 56 inches. Is this the correct length?