Hi, I got this 753 frame off eBay last week, built it up at the weekend and have ridden it a couple of times over not many miles.
Today though, I noticed what looks like a crack at the top of the seat stay. It's hard to tell, but I sanded it back to get a closer look and it seems to have a 'lip'. It's slightly higher at the wheel end, almost like a sleeve has been put on, but it doesn't go all the way round. I thought it may be a paint run at first but it's definitely in the steel.
It's almost perfectly straight and stops at that black dot (sharpie!).
There doesn't seem to be any movement in it in any direction as far as I can tell, and I can only assume it was there when I bought it - I certainly haven't ridden it hard.
Can anyone reassure me that this is just a cosmetic thing, ( I have no idea how it could be) and not a 'contact the eBay seller and ask for at least a partial refund' situation?
Pictures are here