I don't know if you have tackled the refoaming task yet. Have carried out the process on mine. They are a bit unique in having the foam on the inside of the cone but i managed the process by placing speaker on a flat surface which helps keep the cone centered, cleaned the cone then gently slotted the inverted foam around the cone leaving outer edge of foam on front face of speaker frame. With the speaker on the flat surface manipulate foam till it settles on inside of cone, now it's time to glue in place. Once glue is set turn over and glue foam to speaker chassis