Dave ! I stopped using Humbrol matt cote because it is totally..... lets say :devilangelfight:
They say its designed for modellers !! more like designed to go white and ruin a perfect model. Don't buy that stuff anymore but buy 'Vallejo acrylic matt varnish', this stuff can be brought as a pre-mixed 400ml aerosol can and goes on beautifully, its about a tenner a can but because it covers so well one can could paint ten
Tamiya Lancasters ! You can also buy this stuff un-mixed if you like.
It comes out of the can onto the model which looks 'milky' but dries 100% clear, i've been using it for five years now and won't use anything else, all my Lanc's which are on this forum are painted in Humbrol paints with a Vallijo matt finish.
Vallejo ACRYLIC MATT Spray VARNISH on eBay (end time 04-Mar-11 15:16:50 GMT)