I had my windows tinted 5% all around but I got the Clifford Matrix RS3 alarm remote start and I was told that the proximity sensor wouldnt work with tint this dark so I removed it all before I got the alarm installed. But after getting it installed the guy that put it in told me that the proximity sensor probaly would have still worked with the tint. He said that most of the time the darker the tint the less metal that the tint actually has in it. So now I have to spend another 180 to get my windows tinted again. My question is what it the darkest that I should get my windows so that my proximity sensor will still works?