I have a 2012 GS Sky that I've been meticulous about taking care of. I noticed yesterday while claying my roof that the plastic gutter
piece was a bit loose. Upon closer inspection along the gutter I found 2 rust spots where it seems paint wasn't applied. I'm guessing
there's a metal tab in the location and the paint spray was blocked. Luckily I had a bottle of Trix (IronX) and that removed 80% of the
rust. I then gobbed on touch up paint using a fine brush. I hope that stops it. It's in identical areas on both sides right where the front
and rear doors meet. So I'm sure it's a factory defect.