I don't hand pollinate mine but they are rather slow to produce anything. Try giving them a feed of tomato liquid, maybe that will encourage them to grow a bit ...

What is pollinating the tomatoes and cucumbers? I would at least try hand pollinating, since it is so simple. Just go out one morning with clean dry hands, and gently touch the open ends of the blossoms, going from plant to plant. Your fingerprints will pick up enough pollen to do the job.