So, I have an old Schwinn World Voyageur, 23". I have been riding it for several years. I don't have any serious problems with discomfort and I've taken it on several long rides over the years. Mostly I just use it for commuting, about 10 hilly miles each way. I do have one niggling issue. I actually went to a sports therapist a while ago and paid for a bike fit, not so much because I was having an issue, but because I was considering putting some money into restoring, modifying, improving the bike and I didn't want to spend a lot on it if it wasn't the right size for me. He told me that generally it looked good and the only thing he would change is to move the seat forward some for proper KOPS. I can see how that would help me a little bit. I do feel like I'm reaching a tiny bit when I'm at the forward-most part of my pedal-stroke. I also find myself sliding forwards on the seat a bit. (I've played around with seat angle and have it set with a very slight nose-up at this point. sliding forwards is minimized, but still noticeable.)

I'm also not particularly flexible and I feel like I'm reaching just a tiny bit more than I'd like when I'm on the hoods. I'm most comfortable with my hands resting on the ramps. I very rarely use the drops.

This leads me to think that I'd be a touch more comfortable with a cockpit that was 1 or 2 cm shorter. I would try just sliding the seat forward, but it's already as far forward as it can go on my seat post. I'm wondering if a zero setback seatpost is the way to go. I don't know if that could introduce any other issues with stability or mechanics. Do you think it's worth trying, or do you think the bike is just a hair too big for me?