Hoping you can help as I made a mistake on my painting - I had been using a plaster primer that didn't need diluting for a mist coat. Everyone told me to 'just use Leyland Trade' which I did, but I didn't add the 10% water for the mist coat. Currently I have a base coat (not diluted) on the walls of the dining room and hallway, which I am going to cover with a mist coat. Do you think this will work? However I'm not sure what to do with the living room as I have a base coat of leyland trade (undiluted) and one coat of matt paint on top. I am considering watering down a top coat, then attempting to seal on top. Any advice would be very much appreciated!!