While my mind is on withdrawals, some quick hygiene:
1) never send identical withdrawals twice, it'll make your accounting a nightmare. Send 0.9 and 1.1 instead of 2x 1.
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4) some routes bizarrely fail! e.g. XRP Kraken --> Bithumb doesn't work. Particularly watch out for smart contract ETH xfers, some use them and some can't take them
