I don't know if anyone's mentioned this yet (didn't see anything in search), but I was flying an F4U-4 in MWA last night and getting yelled at because apparently the -4 is a 1944 bird...
If so I suppose it should be removed from the MWA.
If this makes you mad, sorry.
edit: it appears that the -4 was first produced in September 1944 with in-service dates in October 44.
further edit: Apparently it's already been disabled in MW. Please ignore this post.