Originally Posted by RoMad

I was a welder for many years and still work in the construction industry. It does not look like a new crack to me, but I would get it repaired before going too far on it. You have probably been riding on it for a while without knowing it. It should not be hard to find someone in most towns to repair it. Just make sure they identify the base metal and use the proper filler metal. As for warranty I would think that if you are in a remote area and have it repaired, having the photos should be plenty of evidence to cover a warranty replacement. I don't think any frame manufacturer would go to the trouble to repair it, they would just give you a new frame. If they don't cover it under warranty, look at the bright side. You can always upgrade to a steel frame .