Thanks to all for the advice. I am considering a professional fitting, but the shop best known for that charges $250 and that's a bit steep for me right now.

But I did move the seat back up to it's former position and my legs feel 100% better. I'm not averse to being a little muscle sore after a good ride, but there's good sore and bad sore and I was definitely getting bad sore. Just got the tools today that should allow me to loosen the seat clamp, so I might try and play with that a little. But I think I'll pretty much stick with the status quo for the time being as I didn't realize how good the set up was until I messed with it.