Anyone else have this issue? Trying to look through the tons of installation items posted on here but I am not an expert so I must ask the group. So after install in the rear deck these worked fine with the one up upgrade factory stereo replacing the midrange only paper cone Boston Acrapstics. Then they ring adapter between the rear deck and the speaker warped upward between the 3 rear deck bolts after 2 days do to the heat of the sun I would assume. Now I have that awesome plastic on metal vibration sound. Lovin it. tried being lazy and jamming cardboard under it but that didnt work. is this where you would put the dynamat, between the metal deck and the ring adapter or whats the proper item? I see it on top of that adapter in the postings for rear deck installs. I am having JBL send me out 2 new ring adapters but have no desire to do this install 3 times. Thanks guys for any input.