One other problem for you to think about. If tank's sit empty then the silicone tends to dry out. If it's been sitting for that long you may rethink that. Anyway If it were me I would check out the tank first. If the silicone still feel's VERY soft then I my self would offer them $50 to $100.
cheers
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No matter what the morrow brings, inventors keep inventing things.
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Jonathan
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www.cakerybakery.ca
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