We recently had karndean type flooring fitted for the whole downstairs. I love it, it looks great, however it isn't completely level, there is a lump underneath in the main corridor, not massive but like a flattened molehill. Had it about 3 weeks now and got the guys out to look last week coz I keep slightly tripping/catching my feet on it. They basically said it had to be like that because our floor was so many different levels before. I don't really understand but I don't see why, I think we've been fobbed off