$ 9.— is just crazy cheap…
I think the pill is also pretty much hollow, just a thin platform for the star, then like an inch under that platform all the way to the driver location, I wonder if filling that with silicon would add some mass and heat dissipation capability
Try silicon carbide mixed with duct seal, or fill the pill with copper ground wire & solder (couldn't find links to my posts about this, but I got the idea from Chicago X).
-Garry