Miata handles, do yourself a favor and fabricate (and attach) a small guide bracket near the rear of the door (inner) to control movement of the rod or cable, problem gone!
You can purchase a matched door key set from a Mazda dealer for the outer handles, or
disassemble and install a polished round "slug" in place of the lock cylinder. MAKE SURE THE RETURN SPRING IS SECURE ON THE HANDLE. Add one if necessary. Grind off the lower corner of the bearclaw latches on the latch side, prevents any scratching of the fiberglass. Works a treat.