Very nice shots!
The Spitfire MkIX was substantially a re-engined MkV with a strengthened airframe. The MkV looks differed little from the MkI and Ia.
Yet, it had a longer nose to accommodate the larger two-speed, dual stage compressor of the R.R. Merlin 60-series engines, 12 single exhaust stubs instead of the earlier type grouped in three on each side, a 4-blade prop to absorb the engine power at higher altitudes and a longer, more sharply tapered prop spinner containing a new constant-speed prop mechanism. You did a great job in correcting exh stubs, propeller and carb intake.
You can keep Alpha's model for a MkIX, even if Alpha's MkIX has a nose section resembling more a MkVb/c. I'd suggest Alain L'Homme's Spitfire MkI and/or II for the earlier mark. You can find it here at Simviation:
http://simviation.com/1/download-fil...p&fileId=30250
A comment about the MkIa repaint: if you are depicting a BoB MkI the tail band and wing yellow leading edges should be overpainted with the camo colours. The tail band, called 'fighter band' appeared only in 1941, while the yellow leading edges for head-on identification where applied only coupled with the 'temperate' dark green/ocean grey camo scheme in the spring of 1942. At the time, the Spitfire mark equipping RAF front-line squadrons was the MkVb.
RAF fin flash, fuselage and underwing roundels changed to low-visibility, reduced white band in 1942 also. They look wrong on an early war RAF fighter, much like US star-n-bar insignia would look out of place on an American pre-1943 aircraft.
Cheers!
KH
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