Originally Posted by
easyupbug
I recall early Konas used Kalloy seat posts and I know they made and probably still make 26.6mm posts. If that is what you measured for the post and clamp why are you trying to stuff something else in there? The clamp on my old Lava Dome is plenty robust and up to the task.
Because the bike is specified to use a different diameter, and using a smaller diameter can stress the seat tube. I looked at it again this morning, and there's a tiny gap between the seat post and the tube at the back where the clamp is. That's all I'd expect to see if it's just a tiny bit ovalized. I know it's a sin to try and fix something that's working, but an undersized post is something that should be addressed, just maybe not this week.