96 XJS 4.0 2+2 Boot lock

I removed the old boot lock as the orig key was lost , Last owner supplied a new lock assy I was wondering why the lock would not work off the key. I removed the lock tumbler and found the little spade that operates the lock itself is broken off. Bummer… I tried to remove just the tumblers out of the old lock and it would not come apart short of smashing it with a hammer which I did . I ended up drilling out the pot metal lock assy and inserted a dowel pin and epoxyed it in place Fixed

Yeah, anything like what went wrong with my latch?

No mine broke at the base of the lock cylinder it has a half-moon shaped pin (pot metal)that turns the lock mechanism. The rest of the lock assy is fine.