I don’t get damage at 3mM. The forum is 2.5mM in stock form before dilution.
I sprayed with that 3mM, no damage at all.
that's day 5, 10, and 15 post 12/12? Did you ever do Farmer Joe's schedule at 5 days before 12/12, on 12/12 flip, then 5 days after? I'll try your dosing schedule next time, you've gotten a great response from that plant, which sounds like a killer cross too.
I sprayed with Farmer Joe's schedule at -5 , 0(flip) , +5 and they reversed (just have to be patient waiting).
But I went away for 5 days that turned in to 9 during a heatwave, got back and you guessed it they were TOAST. Never got to the stage of pollen formation, oh well next time....