Ailerons are not correct. Revell offers inaccurate metal ailerons.
I replaced them with Barracudacast detailed fabric ailerons
On the other hand, coffman starter blister is not accurate.You can see the difference with the Hasegawa s Spitfire Mk.II kit part.
The grey one is Hasegawa part and it seems that Hasegawa s part is accurate as dimension and shape.
5 attached images. Click to enlarge.