Looking good Steve. One minor comment though, your wing guns need painting.
An interesting site;
http://www.ghspaulding.com/guadalcanal.htm The reasons the British rejected the P-400 for combat in Europe: (not in order)
1) Visibility from cockpit in adverse weather conditions very poor; in heavy rain the RAF pilot's notes said; (i)lower door windows
(ii)reduce speed to 150 mph IAS
(iii) lower flaps 1/4
(iv) select fine pitch
(v) watch temperatures
2) Poor performance above 15,000 feet. The air intake behind the canopy, for aerodynamic reasons stopped working properly at certain flight angles; the engine was forced into giving lower power as it was starved of air. The small wing didn't allow good high altitude manouverability.
2) Badly designed canopy - low, non jettisonable roof (the similar earlier Hawker Typhoon 'car door' canopy was much better) and poor entry/ exit in emergency
3) Low servicability.
4)The RAF had access to sufficent numbers of Spitfires by the time the P-400 became available.