323 Hatch Lock help
 

Hello, I am working on a 92 323 hatchback and I broke the key off inside the hatch lock! Im getting a spare key from the previous owner but the lock was very difficult to open so thats why the key broke. Now I have to try remove the lock and take it to a locksmith to try get the broken piece of the key out of the lock. Any tips on how to remove the lock? It looks like I have to remove the big red piece of plastic in the middle of the hatch but of course the nuts are rusted so tight im pretty sure ill just brake the bolts! Any help would be greatly aprreciated, thanks.

Ty