Yes. Straight from ledil.
I just put 4 sets together on 120mm sinks pre drilled and tapped based on the spec sheet(83*off the holder holes). Every one fits just exactly right. Using 8mm m3's. Sits just inside almost touching the metal tabs
@Growmau5 was sanding and I think you are having the issue with. You shouldn't have to sand them. The reflectors are sitting completely flush and the tabs are not pushing on the reflector in any way. Your hole alignment is probably off a little. There is not much room for error with the 3590's.
These reflectors were designed for the 3070/3050's then expanded to the 3590 with the different adapter. Seems they didn't give much working tolerance for the bigger adapter/holder.
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