Just because the hydrometer hasn't moved, doesn't mean it is done. It may be stalled out. I agree with the previous poster and ask again: did you try swirling and raising the temperature up incrementally? Anything with an FG that high could easily make bottle bombs. I am fermenting a batch now that after 5 days the hydrometer stalled, and I warmed it up to 70* F and my fermentation restarted. Not by much, but my FG did drop.