I used the lava rock weather stripping sold on amazon to seal the door on my Pro 780. Use these in moderation, though, as too much can actually be toxic. Rings In Nature. Welcome to the eG Forums, a service of the eGullet Society for Culinary Arts & Letters. Try to keep the tip of your tongue placed behind your lower front teeth at the gum line at all time, and try to only push with the middle of your tongue.