bad gasket let ice form on inside of door

its best to use power screw driver lot of screws .took out all screws took off door took out side to remove ice from door. just used water to melt ice. took off old gasket and put on new gasket. put door in place and started screws in four coners do not tighten screws at this point.put in rest of screws. work arondclock wise making sure gasket is seated while tighing screws. check gasket for flatness you may have to use hair dryer on gasket to make it flat.