Well, the good news is that my passiflora Coral Sea has finally bloomed. The bad news is that my Tam 150-600 has lost autofocus and will have to go in. This is the third time, so I am going to press for a replace, rather than repair.
I managed a few shots in manual, but even that is wonky -- anything closer than 15 feet or so, no matter how sharply focused, shoots blurred. Luckily our juvie was about 20 feet up the tree.