If you've got the fat part of the eccentric spun all the way to the back of the bb shell (i.e. the bb spindle is as far forward as it can go) and you're still have 2" of slack, your chain is too long.
Are you actually spinning the eccentric in the shell?
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You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.