Omlöpp LED very different brightness in display cases

see attached photo. Kitchen is finished. Everything is wired. Omlöpp round LEDs in the display cabinets and as can be easily seen there are strong differences in brightness. How can this be and what can I do now except buying x lamps and trying? Especially since it's not so easy to pull the cables because it's an island :(

Are there any small films or something? But then only each would become darker and there would still be differences....

I am grateful for any tip.

They seem to me to be two different color temperatures rather than brightness levels. Warm white in the middle, the others cold white. How something like this can happen, you have to ask the manufacturer in China. Complain and test before buying, pay attention to the same manufacturer number and production date.