I really don't understand when it says bend at the hips not at the waist. Isn't that the same thing? I'm not sure how to apply his method, I willing to try anything because I really do like the bike.
Generally, the motion you make to lean forward, like a stage actor taking a bow, is to bend at the waist. That would be the wrong motion. Imagine taking that bow, but keeping your back arched as much as possible so as to stick your *** out high. The spine remains as straight as possible, you're bending at top of your legs.
Put the bike on the centerstand and sit on it, hands on the bars. Arch your back while still leaning forward towards the bars, and feel how your *** rolls up. It feels like you're sticking your *** out for someone to kick!
That's the difference between leaning forward from your hip (*** stick back) and leaning forward from your back (slouching.)
Main thing is what I said before. If you have to shift your weight to let go of the bars, then you're probably slouching, bending at the waist (spine curve) instead of the hip joint. Your back shouldn't bend to reach forward.
It was an adjustment I had to make. I still have to remember it sometimes, I find myslef slouching to what feels more comfortable, but then I realize the comfort is short lived, and the pressure on my shoulders will catch up with me. I got excrutiating pain in my shoulders, not my neck, when I first got the bike.
It will also help to keep the pegs under the ball of your foot and not the arch, although I move my feet around quite a bit to help my aging knees.