He said LD10, not LD01. I can see the wonderful dark spot in your hotspot. The reason I returned my L0D Q4. Although mine was far worse than yours. It looked like a cat's eye. The reflector is to damn small to be smooth. I don't know what the heck Fenix was thinking...
Yes, the PD20 and LD10 are the exact same head.I don't have a LD10, but I do have the above LD10 (transposition ) and PD20.
The PD20 has the same size reflector (probably) as the LD10. And the hotspot is free of any tint variations.