I took it to the local dealer instead of where I bought it at.

The first thing he says upon seeing the rust is, "maybe they didn't prep it right."

Honestly? You can't look at a problem and see anything else but to blame another dealer?
It clearly has nothing to do with how it was assembled from the crate.

He did take pics and is sending it in. We'll see how it goes.

Anybody else check their pipes yet?