Tim - yes, I was aware they love acidic soil - which I cannot provide. I've seen several over the years in South Florida landscapes that have fruited profusely, Mike Harris (Waykoolplantz) being one of them. I'll put down oak leaves, then mulch over the leaves. Its the best I can do as far as soil amendments without spending mucho $$$. I suspect that once fruiting has occurred, it will continue to do so in the future.
This was the last of my fruit trees that have never fruited.The Jakfruit finally got on board last year. Embarrassingly, the Key Lime too. The Key Lime had me so aggravated that I contemplated removing it if it gave me no fruit last season. I feel it knew it was doomed and gave me a whopping 5 limes last year. Enough to prevent me from breaking out the saw. This year it is loaded.