There are two latches on the tailgate of my Citroën C2 - the right-hand one latches fine, so the boot can close and lock, but the left-hand one doesn't, making it insecure. I've found that it will latch if I really lean into it, but it's not reliable. There's no obvious difference (to me) between the working latch and the broken one.
Are there adjustments I can make that will help it latch? I've put 3-in-1 into the rotating parts to no avail, and greasing the actual striker just made the problem worse.
This is the working right-hand tailgate latch:
And this is the faulty left-hand latch: