bp, you are right that the screw holes did not match. And yet the hardware was identical. Why the difference? Frankly, I think they misaligned the hook at the factory -- it was too high up, and the latch was not sufficiently depressed. This caused the tongue of the latch to hang up in the strike plate on the door, which is probably one reason we had so much trouble with the latch in the first place.
I tried mounting the new hook using the old holes and got the same poor results. So I realigned the hook to a better position. It left a couple of unfilled holes in the door, but (as we say) "it's just camping." Things don't have to be beautiful like our stick house. (I don't know how to do those roll on the floor laughing emojis.)
