Ice forming on the mullions of the freezer door.

Cover the freezer opening with cardboard and tape, remove all items from freezer door. It's easier to work with the door removed but the hex bolt on the bottom door hinge may be rusted in place. I wouldn't force it. Replacing the gasket with the door attached is not that diffult. Remove all the screws (1/4 " nut driver, you can use cordless drill driver for this, but I would reccomend reassembly by hand) Gasket will pull off...and then the inner panel. You may find ice on the inner door panel and the insulation may be soaked. Rather than wait for the insulation to thaw out and dry, may be easier to replace with bat type insulation on the inner panel esp if you have some on hand. On reassembly, take your time, work the gasket into place, get all screws started then tighten in sequence with a watchful eye on the gasket. Had no problems ...ice is gone, refrig. seems to run less. Very pleased.