Hey guys, i replaced my factory speakers with some new kenwood 6x8s. Its been about three months and i have had this annoying rattle now every time mid/bass cords hit in the song. The old ones had no issues with that but they had a little rubber piece on it which i assume it helped reduce that rattle. On my new speakers it did not come with that rubber piece. Now i was wondering if i placed some type of foam on there around the speaker if it would help, has anyone else had this issue or is it just my car?