Rey and I helped a guy (Chip) bring his 47 foot Aluminum Ovni from Charlston to DC. The head stopped working half way there so we took it apart. The hoses had a clear hole about the size of your little finger. The rest was solid. We beat it against the hull, twisted it and the stuff came out. It must have been 1/2 to 3/4 of an inch thick. I actually saved a piece but then started thinking about it and threw it out.

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