If your going to replace your gasket might as well do the silicone trick and have a better gasket as well.
1: Scrape all residue out of the door track, if any rust is present go ahead and fix that as well.
2: Using high heat silicone place a generous bead in the door track, go ahead and work some silicone into the new rope as well.
3: Place the rope in the door track as you would a normal rope, spread more high heat silicone over the rope.
4: Using a putty knife work the silicone smooth, if desired masking tape can be used for a neater appearance when done.
5: Place wax paper over the fresh silicone and gently close the door, then open and leave open for at least 24 hours for the silicone to cure, given the amount of silicone 48 hours might be better. If wax paper isn’t available I cut strips of aluminum foil and just leave it attached to the silicone.
6: Remove the wax paper and enjoy your new gasket.