If the post wasn't a Ritchey it could have been a like twin parallel bolt Kalloy SP-376. Kalloy heads are notorious for having a short clamping area on the rails. I won't use them for that reason alone. I have those classic Ritchey posts, the rail clamp is large and the edges are smooth and free of abrupt edges. Plus it holds the seat very well without the need for undue torque. So if the person who broke their rails because of over tightening the clamp, I doubt it was Ritchey.