Peisovn "Contura" smoke leakage

Peisovn was working fine the last few years, but when fired up for the first time this year, the smoke leak from the top side of the front door and topback of the peisovn. Last month, carpenter was trying to move the peisovn for flooring replacement. So, suspect the peisovn was not assembled back correctly after that. Need specialist in peisovn to find the problem and help to fix the smoke leakage.