I'm actually arched over slightly rather than straight. When the post is that tiny bit longer, the seat moves back
just a bit, and the reach is more. This actually flattens my back angle rather than arching it (my seat can't go back any further
on the Thompson post). I was thinking maybe I need a set back seat post, but that's rather a big production, as it will mean a new
stem and possibly raised bars (cannot make my stem any longer). When I get it just right, there's no problems. It's just that sometimes when I fold it, I lose the perfect setting. I am thinking of getting an engraving pen to mark the post since it doesn't have any. And I was just wondering if other people need their fit dialed in just so perfectly; seems like some do and some don't. Lol.