After taking them apart, you have to get rid of the groove that the rubber gasket seats in. I used a jigsaw like a sawzall, and put slices into it every 1/2" or less. Then I used a small pair of flat nosed pliers to rip each 1/2" section of the groove off which left a rough torn hole (that sounds really bad
). To clean it up I used a drum sanding bit on a dremel and cleaned it up really nice.
I will have a "how-to" soon
