Ok I am remodeling a house we just bought. It is early 1900's vic. The guy that owned the home before did some nasty sand finish on the walls. I don't just mean the sand finish was bad, but the amount of plaster he used in places is unreal. They were humpty... I thought I could flatten them using plaster. I coated the whole wall. It was hard to float because the walls were so in and out. I'm finished in one room and it turned out pretty good. Better than I thought it would. I was worried for a while tho. Second room is not looking as good. I am starting to think I should have simi flattened the walls first, let that cure, then bonded a topping coat. I am using norfolk and diamond plaster. Any Thoughts?