Interior problem
1992 Toyota Corona 4 cyl Two Wheel Drive Manual 223000 miles

During normal course of use the truck lock has wbeenworking well. Yesterday with a fully loaded trunk the lock ceased. No cannot unlock at all (either with key or via uinside control lever.

Also,

Driver door locks operates OK but not crisp, occaionally not open until 2nd or third attempt.

Thanks for your advice about what could be done