Hi there I have an issue with my 2017 A5 (b9) sportback , the boot raises to the top of its capable travel but starts lowering slowly, now to the point it is almost completely closed. I have tried resetting it by holding the boot in place and holding the close button for a few seconds. The car beeps and accepts the position but it does not hold when I open it via fob or drivers door. I have taken it to a garage and they have told me the parts alone will be £700 + . Is there anything to try , I cant find a way of tightening the struts.