boot release

So a few days ago my boot latch started making some rather funky noises and then suddenly wouldn't lock the boot. The noise sounded exactly like this (not my video) So I ordered a new part from eBay with the part number 1P0827505A9B9 but always best to use the number from your old latch to make...

The only thread with really useful information on this is archived, so I can't post there, but I'm having a real pain with fixing my boot release. Trim is off and I've done the usual of lubing the mechanism. I thought this had worked, but all I'd actually done was fix the problem temporarily by...