[jayme]

While checking the Cruiser for any further problems, I happened to notice some dust(dirt) in the bottom of the washroom cabinet. After removing the partition, I noticed about 1/4" of mud on the floor. After removing the cabinet door and partially crawling in I saw that there was a gap of about 1/2" where the floor had been cut out for the toilet drain near the rear side of the black water tank. As this couldn't be reached from the bottom side, I stuffed heavy duty tin foil in from the top and then filled with expandable foam, topped with aluminum tape. Later inspection found similar "gaps" under the sink next to the hot water tank. Left open, could be easy access for rodents, and could cause water damage to the interior.