Hello Shonen-Red,
Overall a good looking model. I usually do not advocate "clouding" the paint for wear and tear but on this model, it works great!
I agree the chipping looks a little unnatural--perhaps better stated that it looks too uniform?
After a disagreement about chipping on mid and late-war US aircraft, I searched all of my
WWII...In Color books. I found that USN carrier-based planes showed very little chipping. Was this due to attrition, or better maintainance--who knows? On the Corsair it seems most is in the form of scratches around the intercooler intakes at the leading edge, a little near the wingroots, and otherwise around high-scuff areas like cowl rivets. That said, the photos were not taken for modelers to study wear patterns, so a lot of the surfaces are not very viewable.
Overall, a good looking F4U.