Hi all, first post, so apologies if this isn't in the right place. I've got a 2012 Edition 35 that I've owned for 4 years now and is pretty much perfect in every way. The last month or so thought, it's developed a quiet knock noise from the offside rear when accelerating or braking. It doesn't happen with vertical load like going over speed bumps. I asked my trusted garage to take a look when it was in for a service last week, and they couldn't see any issues other than a rear drop link that's starting to need replacing, but that's nearside rear. Any suggestions would be greatly appreciated, thanks.