My BM was showing spotted yellow and mottled leaves all season even though there was excellent growth, I switched over to a monthly top dressing of dr earth premium fish bone meal, and weekly watering with Neptunes Harvest, and it's gone! Tons of new shoots dark green leaves and lots of figs! FMV...! forget about it! What FMV? I don't see any FMV!

Did you end up treating that plant for fig bud mites? I remember you were having trouble with the microscope but don't remember any updates after that. The leaf symptoms did look much more like fig bud mite symptoms than virus symptoms. You would not be the first person to look with a scope but still not find them, I've talked with plenty of people privately about the issue. 

What was your previous fertilizer regiment?

I think it was probably the mites. The spots still form on new leaves for a little while, a week maybe, after the mites are all dead. They feed on the leaves when they are still very small but the damage only becomes visible after the leaf gets bigger. So there is a little bit of a delay before you see improvement on new growth. The spots/mites came back in about a month on a couple trees that didn't get good spray coverage, so keep an eye out, it looks like spinosad did a pretty good job though. I didn't try spinosad because it is not listed for this type of mite but if it works at 2x strength, it works! How much time between sprays?