With all the rivets and lack of panel lines I thought this model would be a good candidate for pre-shading. I've never done it before so we'll have to see how good it turns out. I'll be pre-shading before each color to give the black a better chance of showing through. Here's the shading for the white undersurfaces.
Thanks guys, yes I'm sold on the pre-shading, especially I think on older kits with raised panel lines or rivets when its harder to bring out the panel lines.
I did some touch up painting, added the rudder, masked and painted the de-icing boots, started painting the engines, then brushed on quite a few coats of Future to get ready for the decals. All I need is 4 stars without the bars and I have some from an Old Monogram P-40B kit that look to be the right size.