Dwarf Meyer Lemon tree stuck in a rut
My Dwarf Meyer Lemon tree seems to be stuck in a rut. It is growing lemons, but they aren't ripening. The larger ones have been stuck at about the same size for what seems like months. I'm right near the beach in LA, so we have a lot of gray days, but it's usually in the 60s or 70s and sun is definitely plentiful and it never freezes. I fertilize with both compost and a citrus fertilizer and keep the soil moist. Any theories on what the problem could be? Most of the leaves grow curled or deformed and tend to get yellow in the middle and fall off very easily. I've attached some images below (you can click them to see them full size)
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