The top of the seat tube is 0.6mm according to the Minimax specs. I can see the weld penetration of the TT inside the ST, which has been reamed. The seat stays are brazed on, and the crack is right on the joint between the seat stay and ST. I believe this cracked from someone prying open the clamp open, as the seat post was stuck in there. The binder ears look to still be fine. I will stick a 26.8 or whatever smaller seatpost in and give reshaping a go. Then work my way up to a 27.2.

I will be paint stripping the frame soon and see what it looks like underneath. The welds are no where near as nice as the welds on my Litespeed, but they are decent enough compared to other welded frames.