Both planes utilise some of the stock gauges, have you moved the *.cab files from the default planes panel folders into the gauge folder? The one missing from the stang is a CFS2 Wildcat gauge, should already be in your gauge folder, the top right is an FDG P47 gauge, which should be included in the package. If not might be in the xmas pressie P47 Malcolm hood?
Not sure what the missing gauge from the B17 is yet, the VC gauges aren't arranged the same in Panel Studio.
Jamie
PS. Have you ran a gauge cleaning util, it might have removed the old CFS2 gauges as they are not used in the default planes IIRC. If so they will be on the disc somewhere ready for you to pull from a cab file.