From "American Warplanes of WWII" by David Donald, "...only 200 F4U-1Cs were built, with most going to VMF-211." I'm not sure how to take that - one squadron couldn't possibly have made use of the majority of 200 airplanes. It does not, however, rule out a small number seeing action for the Navy, flying off carriers.
My biggest problem with the F4U-1C is the external stores capability. I have cross referenced this in 3 different sources, and they are all clear on the point that the 1D was the first Corsair equipped for carrying droptanks, bombs, and rockets. The 1C should not be able to load these items.
Its virtual absence of torque also surprises me. I stood at the end of the runway in a 1C, with 75% fuel and 1 notch of flaps, and rammed the throttle to full. I was able to control torque steer with minor rudder inputs. I believe the A6M5b requires more correction than this. It certainly doesn't remind me of its reputation as an ensign eliminator.
I agree with Ghosth - it makes sense to perk it for a small number of points. It'll give the Hog drivers something to aspire to.