I recently purchased a V70 2.5T. It has 50K on it. The rear upper motor mount is bad and causing vibration at idle. Is this common for this vehicle? How difficult is it to replace? Do you need to use a floor jack to maintain bolt alignment? I am quite familiar with RWD Volvos and have only had to replace one motor mount on my 960 at 200K. My 240 has 320K and has original mounts. Any guidance would be most appreciated.