After you free up some space to work with, you could download the photos that are huge, then upload them again after reducing the group size limit setting so that it will reduce them for you.? Then, using the recent feature, assign ownership to the person that originally uploaded them.? BTW, I've got my max size set to 312x312 and no one has complained, but we don't do serious graphics work, so it depends on the group.
Duane
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