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That seems like a really specific pair that would be unlikely to see a deep order book form? You're better off working across xtz:usd+usd:leo to achieve the same thing
Agreed. Also XTZ volume is low on Finex in general. That would make that pair risky and that's why it's not possible to enable margin as well.
Btw looks like @bitfinex traders do not understand #blockchain 3.0 and $xtz #tezos chain... if few months they will for sure 
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