I was just singing the praises of Munro in another thread while going through Munro's Introduction to Lucretius (contained in volume two of his three volume set).
I think Munro is generally very sympathetic to Epicurus and Lucretius and therefore someone to be consulted in any translation issues, but here's a clip that I have to disagree with:
I am posting this mostly as a joke because I have been saying on the Lucretius podcast that I am looking forward to the part about magnets, but I do think there's an interesting point here. To me, the issue of magnets probably was indeed something Epicurus and Lucretius thought was important, because it is probably the closest-to-home instance of "action at a distance" that we have directly in front of us. The ability of one magnet to influence another could easily be described to be magical, and I suspect that the Epicureans wanted to take special care to come up with a non-supernatural explanation of the phenomena. So contrary to Munro I do think magnets warrant special attention