Hey Guys, Just bought a brand new Miata Mx5. The Heat Shied is loose when the engine is cold and I just drove it to warm up the engine to see if the shield expanded but it was still a bit loose after being hot. I think it is giving me a vibration/rattle noise at certain rpm's. The shield bolts appear tight but shield is still loose. Hoping for some thoughts. I was thinking about adding a washer between the bolt and shield to snug it up. Let me know what you guys think. Thank you..