I did. there are lots of links and references, and many more than 6.
I'm not going to play this game with you.
If you say there are only 6, you should be able to name them, and explain why those are constant and none of the other of the myriad of things described as "physical contants" in various reference books aren't really constant.
Have you not considered that the radio-isotope decays rates all differ depending upon which father/daughter elements are used?
Yes. And I've considered that the masses of the atoms of different elements are all different. It never occurred to me to try to twist that into an argument that it means that the masses of atoms of the same element can't be constant.
Just saying constant decay rate if truly constant should but do not give the same age for the fossils and artifacts. Maybe there are more than 6 but not including any age-dating methods - none of which agree we each other.