I have found the saddle a new home after continued chafing on the left side. Does anyone believe that chafing is caused by a too wide or narrow saddle? Which has it been in your experience. I am trying to assess what I need. I measured for a 155 ruby and might try that but it looks WIDE in the nose. I know when I had a men's SLR (very narrow) I got those awful blood blisters/saddle sores. That saddle is the only one that caused those. After measurements, the 143 ruby is close..but. All I know is I am sick of my crotch giving up before my legs.