Interesting - i'd definitely see if anyone else on this forum that used them has a similar problem. You can buy knockoff versions of 3M Crystalline online (i almost did once
) and that would be a really good method to increase profits. No clue if the knock offs are metallic, but i wouldn't be surprised.
However the fact that you say your radio has always been poor kinda makes me think you have a bad connection somewhere and Tesla is just making excuses because tint
could impact the antenna and they are busy.