I took delivery on a replacement 6 X 10 DD coil and took it out for a spin this evening and if anything its worse than the coil I sent back. Could some banging around by a UPS driver do damage to a coil? I hate the UPS drivers in our neighborhood. I've caught him throwing packages onto our porch from the middle of the yard. Tomorrow I'm going to run some tests to be sure, but I'm thinking I'll have to send this coil back as well. It was falsing real easy and was easily noisier than the stock coil. Maybe I can get them to send it in a larger box and send it USPS, instead of UPS.