It would probably be a good idea to send djozz a 2mm² CSLPM1.TG on copper star from Kaidomain, so we could better know the difference versus that earlier test (djozz got better results on a second test of the 1mm² white flat). Many people is getting white flats from Kaidomain, it would be of service. Or maybe send one to Texas_Ace for the same reason.
In particular I have a CSLPM1.TG waiting to be mounted on a K6 host (still heading home in the slow boat). Gonna drive it at a little bit above 7A maximum with a ∅22mm weird ramping SST-40 driver. The good thing is that with such driver I can ramp it down a little and measure the ceilingbounce lux to see how it compares. Considering the kind of beefy host, it should work right.