the secret storage containers are not listed because you were meant to search for them and find them.
the sectors are
xxxxx - near where you find xxxxx - somewhere bottom of sector/ xxxxxx - also bottom of sector.
That's xxxxxx in total? The xxxxx. one I've found. See #18 above.
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[Map Deleted] .... yes I know abt that one ......
And you're suggesting one more? If there is …… bet I've found it ……..