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  1. Telephoto Paul

    100-400 mark ii - Tripod Mount

    How you're meant to take the lens apart: http://www.lensrentals.com/blog/2015/02/canon-100-400-is-l-mk-ii-teardown-best-built-lens-ever
  2. Telephoto Paul

    100-400 mark ii - Tripod Mount

    That would be my suggestion too. Some Loctite Blue should stop the screws working loose under normal use but will still be removable for a service.
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