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I see that this will be a core exchange. Will you be using the core we send you, or something that you have on hand? The reason I ask, is around 2014 the cylinder styling/design was changed. When I can do a 904, I would like to swap to that new jug, and would be sending in one of those for a core.
Hi Justin,
we have a stock of cylinders ready for core exchange, many are the earlier cylinders, but we do have a couple of pairs of cylinders with the polished fin edges. So we will be exchanging like for like.
Very good point though. 
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