When did you get the Madone? If it's a 2011 or 2010, I think it came with a Bontrager Affinity saddle. probably 144 mm. if you look at the saddles for sale at your LBS, you might be able to figure out which model you currently have (R, RL or RXL) and which width. Then have them measure your sit bones to make sure you have the right width.
Is the soreness caused by chafing or too much pressure? Either way, if the saddle is the correct width, changing the position slightly might help.
- Gray 2010 carbon WSD road bike, Rivet Independence saddle
- Red hardtail 26" aluminum mountain bike, Bontrager Evoke WSD saddle
- Royal blue 2018 aluminum gravel bike, Rivet Pearl saddle
Gone but not forgotten:
- Silver 2003 aluminum road bike
- Two awesome worn out Juliana saddles