Originally Posted by
FBinNY
Fit the 25.0 post and gently tighten it. When the ears touch, does the top of the slot touch also, or only the ears? If the latter, the ears are bent and the post is the right size.
If the ears touch but the slot still has some clearance there is another possible fix and that's to file off the ears completely and fit a seat tube clamp. That "cure" requires two things:
1. The outside diameter of the seattube lug has to match a standard seat tube collar size
2. The seattube lug has to project above the toptube enough to allow the collar to fit.