Quote Originally Posted by StoneNYC View Post
Mind was new and leaking, bought another and leaked too, bought a Paterson ... No leaks on all 3 because their caps allow for expansion from pressure, JOBO's don't.

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Actually, the Jobo caps have a push in section, which is designed to allow for expansion inside the tank. You push it in at the beginning of the cycle.
Even brand new caps might be leaky and might need replacing... but if you found something that works (IE paterson), none of this really matters.