I have a two and a half year old oro negro. It is a good 13-14 ft tall and set TONS of fruit this year. I was really excited but over the past 2 months it has dropped all fruits except for three. Have you had this problem?

I just visited my tree about 20' tall and 15' wide, last year it held 4-5 fruit to maturity it dropped a lot of fruit. This year like yours mine set a lot of fruit and now is dropping a lot as well. Still have 20-30 left. This is why homeowners should abstain from new varieties until they are proven reliable  It may be a juvenile thing with some trees but Oro Negro needs to be widely cultivated to see it it is worth while to grow. So far I like the fruit but the productions aspect of it is not too reliable. Check on the Oro Negro page in a couple of months