When you change the filter, make sure there'es no 'gunk' on the place where the o-ring should seal. Maybe some filter in the past left a 'deposit' of part of it's O-Ring for you to remember it by.
Also look for indentations like; I dunno, like someone scraping the area w/a straght-slot.
Other than that, yeah, how'd the new filter work out?
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