optics for cob grow light

I'm looking to buy new led unit. Just bought lightess 1500w (340w) returned one of the first 2. And complained about the second, so company send me a 1200(250w) free of charge. It was scratched so I got a three unit at 1000(190w) Worked great for veg but flower is lacking. Come to find out there...

Optics for COB I posted some charts earlier here https://www.rollitup.org/t/how-to-plot-ppf-chart-with-quantum-sensors-for-led-light-comparison.881113/ They give a good estimate. However the corner values were not correct as sensor has to be in vertical position and not aimed towards the light...