Has anyone ever sent a coil in for repair or ""can they be repaired"" asking only because I want to not use a coil cover and use a rubber sealant on the bottom of it instead similar to a Bed Liner Have one on the large coil and the 6x9 concentric but not on the new 5x8 I just got was going to order one but the price for them are really high for as thin as they are and the one I just bought for the large coil already as a crack in it