Help with modding a Jax-Z1

I tend to believe it is more of a centering problem than driver amp output. According to this mod:

he used an XP-G2 to XM-L adaptor to get the LED nicely centered. I am working on having an adaptor there and see if that helps. I will also check the amp output but I don’t see why the amp output would be different if I only change the LED and keep everything else identical.