I personally do not like the shortened versions of the FAQ at all for just that reason, but I understand that they'll stay that way for various reasons, so that's groovy and fine. But, my suggestion is -- can we make the lj-cut link customized instead of the generic 'read more'?
I don't mean customized individually for each FAQ -- that'd be a pain and not worth it. Just something the same for all of them, like "Click here to learn more" or something. Something with an "do this!" action in it, and a little longer text to catch their attention.