I use a Brooks B67 saddle. I needed to ride on someone else's tandem, so i took my saddle with me. Unfortunately, the first time i did this the saddle was too far forward, so indeed there was some awful rubbing. I adjusted the saddle
and the saddle's demeanor returned to normal; that is; invisible. If you don't notice your saddle, then it fits you right.
So before you throw your saddle away, make sure it's adjusted correctly.