Well i have this brush (Its from Revell):
I painted the bottom of the car the day before yesterday, cleaned the brush properly (also with that stick through the small hole) and stored it. Today i wanted to spray some more and poured the revell color and pressed the button and only air went through. First i thoght the color was too thick (and it really is thick!) so i diluted it but there was no effect. I saw that the air paint wasnt going up at all. Then i just tryed to spray the diluter (or whatever its called) but very little of it (and a little paint left from before) came out. Whats wrong? Any ideas?