Thanks to all for the comments and suggestions!
I didn't even think about the stopper on the commanders hatch- I'll move it into the right spot- it is barely glued, so it will be easy to remove. As for the lifting lugs- they have to stay- I"ll damage something trying to correct that one! I placed the white wash using Tamiya Flat White, heavily diluted with thinner, several light sprays, varying the thickness followed by drybrushing with basecolour, washes and the occasional rub with Mig pigments.
Rob