Originally Posted by Steve_sr

The new shim is good match to make up the gap between the post and the seat tube. The new shim will not go past the weds without being press-fit or hammered into place. The weld protrusions prevent this. Hence my question. The photos also show the old shim as being deformed around the welds apparently due to the action of the original reamer. The new shim shim will fit well both above and below the welds but not in the vicinity due to the weld protrusion.



The new shim will need to be reamed round before the hole and slot can be cut. This is one place where the frame maker screwed up and reamed the shim way too big.