Passenger door opens from inside handle not outside
The rod from the handle button to the latch mechanism on my 68 Dart is not adjustable. Button would get stuck in the handle because you had to push so far to open it. I removed it and took some of the bend out of it making it longer until I nailed it. If your clip came off it might be lying in your door. Your clips are plastic.
NOS MoPar DOOR HANDLE CLIPS 1970 71 72 73 74-up Cuda Challenger Dart Duster GTX | eBay