Because I live the North and got my C7 after Christmas I have only 210 miles on her. After a couple of short 50 mile runs I decided to give her a good cleaning. I noticed on the clear protective coating in front of the rear wheels what I would call "blistering". You can feel it with no problem, but can't see it. The paint around it is perfect. I am going to blame it on road chemicals until I hear different, even though I only drove it when it was dry. Is anyone else having this issue?