I cut open three fruit this morning. All were mostly pith and desicated. I agree with SoCal2warm: tree too small. My Rio Red made small pithy fruit the first few years, now the fruit is much better. Fruit may have frozen and dried out when it went to 14 degrees two nights in March. Even with space heater inside portable greenhouses, I didn’t have a 32 gallon water barrel in this one or my bergamot or shiranui, and the bergamot and shiranui almost died from that late freeze. They did well the previous winter, but this warmer winter followed by a hard freeze shocked them too much I guess, even though they were not showing signs of active growth yet.