Now that you've mentioned it, my knee is bent significantly when the pedal is at 6 oclock. If I stand on the pedal at that position, I am quite a bit above my saddle. I knew it was too low

I need to improve the flexibility of my back.

Maybe next month I can get a bike fit. They cost 120 dollars at the only nearby shop I trust--a lot of money. But you guys have convinced me it's worth it.

Thanks!

--Lluvia