You need to position the saddle correctly first! If you were fine before, and only changed the saddle, then it only makes sense that it's the saddle position. I use a Thomson no-setback seatpost to get my saddle and legs in the correct position. Mine wasn't forward enough on my Surly either. AFTER the saddle is correctly positioned for your legs on the pedals, THEN you worry about the stem length. I suggest you read Andy Pruitts medical guide for cyclists. Lots of good information on bike fit. I used KOPS and it worked for me. (I know it isn't always for everyone, and I've read Keith Bontrager's take on it, but it's a start).
I have kind of a goofy seatpost I won on ebay. It has almost no setback, really scratched and ugly, but you could see if a new seatpost is the solution before you spend any more money. It will fit your Surly. I could send it to you and you could try it. If it works and you like the scratched look, you can keep it. If not you can buy a new Thomson and pass this one on to someone else. Whaddya say? If you want it, pm me your address and I'll send it.
Last edited by uforgot; 05-02-2010 at 06:15 AM.
Claudia
2009 Trek 7.6fx
2013 Jamis Satellite
2014 Terry Burlington