Its a 70 Coronet 2 door hardtop.
I bought them off of ebay around 2004.

They came with a plastic clip mechanism that didn't match
the ball/metal clip mechanism in the car.
So I had to remove (1 screw)the mechanisms from my old handle
and replace it on the new ones..
When I try to connect the ball/clip mechanism to the linkage on the latch,
I have to depress the button very very slightly...
This is what causes the rattling..
The button is no longer spring loaded.

The rubber o-rings are installed around the button
and are not damaged or broken....

It sounds like I have the wrong door handles..
Wouldn't surprise me...
conned by yet another web re-seller huh....