[Nutbutt]

You are seeing less and less in comparison to the first wave. Of course you are seeing just the problems on the forum but for good reason. There was a posting here asking about the number of tops that were good and most all were responding positively.
At 30k and you believe you have top problems I would not wait to get it taken care of. Ask the dealer how many he has done. I had mine replaced and made sure a GM tech was on site for the replacement since this was the first replacement for the dealership. Everything worked out.
I have had many verts and all have had fold marks. You won't find any canvas tops without them. Cutting marks are different and the top needs replacement.
Let's be real we all know the 2011 & early 2012 tops had a design issue. But it didn't effect all cars.