I had my CV joint replaced a few months ago. When they fitted it the clip was done up tight enough and it spilled a lot of grease. Fortunately I spotted it quickly and took it back where the repacked it and retightened it. Recently the car has been making some weird noises when accelerating at 40-60mph and some accompanying clicking on full lock, after having a look I noticed this (see picture). There has been no extra grease come out so what has happened to it? The garage has suggested that it might not need a replacement. I cant see how it doesn't but have no technical knowledge to back up my assumptions. can anyone shed any light as to what is going on with it?