Good idea steve , the galeria can go a bit funny after a while . I got a big ( 250ml) bottle thinking i was being economical but it went funny, with lots of tiny white flecks in it that didnt go away with stirring . These flecks either blocked up the airbrush or if they went through left white spots on the model . Needless to say I dont use it anymore . I might try and get a bit of muslin and see if i can strain them out .These aircraft all seem to have had a really flat finish, not the more satin finish of British and German aircraft. The only really flat varnish I had was the W&N Galleria flat varnish (which really is matt, unlike some I could mention) but that looks a bit the worse for wear, having sat in a cupboard for a long time. I've decided not to risk it and will continue in a couple of days when a new bottle arrives!