Planning the next
AO Silver Member
Join Date: May 2007
Location: United Kingdom
The lock mechanism may need adjustment.
Remove the carpeting covering the rear lights and you'll find a couple of bolts that, when slackened, will allow you to adjust the position of the lock. You probably need to move it up a bit so the latch properly enters the lock. Years of slamming have probably shifted the mechanism down.
Also, at the edges you'll notice two rubber stops, these can be rotated to adjust the boot lid to be flush with the rear wings. As you're adjusting the lock, you may as well perfect the boot lid fit at the same time ( if it needs doing ).