Ya that's why instead of putting in struts that actually work they tried putting 22 dollar amazon coil spacers in. Less money for them to spend. Still not right. I wouldn't be mad if I didn't give them the opportunity to tell me this speaker box would cause an issue due to weight before hand. My cars got 1 coil spacer in each back coil already with these symptoms. They were gonna put more but they cancelled all my appointments. Seemed like a band aid. And sort of them admitting the struts are not working right