I just finsih one of my 1/72 BTR-60 AFV, and tried to aplied the wash technique I read on this site. So I first applied a coat of Tamiya X-22 clear to give it sheen.
Then I remembered I read it some here sometime ago, some guy complaint about the flat base he used gone bad. So I thought I might want to try mine first before do anything else.
Upon open the cap of my X-21, the color of the contain looks grey and very sticky. So i thinned it a bit with thinner. Then applied it to a small area. When it dried, to my horror the paint turned out to be WHITE

Just is this normal or mine X-21 is a bad one?
How do I find out if a flat base paint is good or bad?
Also, is applying a clear coat then wash then falt base is the only procedure to do wash?
thanks.