My score is good but I tend to be slow. Any suggestions to improve speed?
Maybe a speed-reading course?
I'm serious - there are lots of courses and techniques for reading more quickly and still understanding and retaining what you read. If timing is your biggest issue on this section, might that be a help?
(I have the opposite problem; I read quickly but I make a lot of stupid mistakes. Still, at least I don't worry about time on the verbal section. Math is another story...)