I already took one peach colored one out and replaced it with the filter. Then I cant get the pan on. Realize I cant get the filter to seat all the way. Pushing and pulling, all the sudden I got another seal. This one is black but looks the same as the other two. Question is, did someone else leave it there and add another, or does the black one stay in addition to the one with the kit. Not a big deal, but figured I'd ask before I put t back together.