Thanks! It sounds like from the letter that they mention the broken in saddle as being 'indented', which to me means that it may break in the same way as the one I have now, so perhaps a new saddle won't solve my problem. I did a google search on broken in leather saddle photos and many of them look just like mine, with a ridge down the middle and depressions on either side:
http://www.google.com/imgres?sa=X&bi...6&tx=98&ty=110