It could just be that particular rootstock was not vigorous or it’s because of the specific rootstock and scion influences on each other. Specifically, more vigorous scion varieties appear to pair better with the Florida Turpentine rootstock.
Just off my memory, the following varieties have done well on Florida Turpentine rootstock:
Edward, Lemon Zest, Orange Sherbet, PPK, Sweet Tart, Venus, K3, VP, ValCarrie, Harvest Moon and a bunch more of the vigorous varieties.
Often, these trees will still be very droopy so they will grow vigorously and then with each additional flush, the branches start to droop from the weight of the previous flush or bloom.
If you already have a Florida tree, just make sure you stake up the scaffolding branches pre-bloom because it is the weight of the blooms that causes the majority of the drooping.
The branches holding fruit will naturally droop and every year, a maintenance pruning to remove old dried blooms, crossing and inward pointing branches along with removal of branches dropping toward the ground will help you achieve a healthier and better shaped tree.
Simon