I grew up eating very juicy, sweet, and delicious figs in southern California (SC). I have lived in the NW for many years, and planted two fig trees 3 years ago now. Anyway, last year and this year each tree has bared fruit. The problem is that they are hollow in the middle, with a dry look. No signs of insects or any other bugs. Took my my local nursery, but the fruit tree expert is not familiar w/this type of problem, but confirmed, no insect or bug problem. The fruit is tasty (sweet) but a little on the dry side from what I ate in SC. What could the problem be?