Sounds like the bee space between boxes is not correct. You can scrape it off but unless the space is corrected they will build more. The easiest way i have found was to lift the hole box and scrape instead of one frame at a time. Too much space and they build comb not enough and they propolis it together. I would wait it'll they get the super drawn before scraping sometimes the frames line up just rite as to give them more space than when they get the frames drawn.