Major cock-up on the markings front.
That is not how MK392 looked. I know, it's in all the books. It's still very wrong.
Most representations of this Spitfire are basically his earlier Spitfire, EN398, with the serial number altered and ‘invasion stripes’ added. The main differences between the two Spitfires are:
MK392 did not have the maple leaf badges or Wing Commander pennant,
The shape of the letter Js was different, those on MK392 having flat bottoms.
There are only two known photographs of MK392 taken in the summer 1944 with partial invasion stripes and winter of 1945 after the invasion stripes were removed and the spinner painted black and the Sky band on the fuselage painted over. Both, previously unpublished, photographs can been seen in 2nd TAF Volume 4.
Watermark decals are the only company I know of that have produced an accurate set of decals for MK392.
http://www.aircraftresourcecenter.com/ISL/Water%20Mark%20Decals/48001-48010/48004/WM48004.htmThere are still differences of opinion on whether it had an 'e' wing or 'c' wing.
The other option is easy to correct. The codes should be ZX*6 on the starbord side not 6*ZX