I have the blitz sides and this happens to my driver side door too. I am getting it taken care of when I get my F1 fenders so only the side skirts are molded for now. Have some shop mold the skirts for you, cuz if they do it right( like they should) this will take care of the problem.
Mine is doing that as well on both sides...I am taking the 3M tape off and using some silicon to reattach them. This will level them out more and even make them a bit lower so it should fix the porblem.
I'll let you know how it turns out. Bad part about doing this is I can't take them off (well not as easy as 3M tape).
Eh...old man with a Corvette now...it was bound to happen sooner rather than later right?