1960 Valiant door latch/no release
60-62's are unique in that this problem can often be corrected at the door latch. Your latch mechanism is held in the door by (3) countersunk screws. Near them is a 1/2 " hex head bolt head. This hex head bolt is the adjustment to fix this issue (assuming there are no other problems). If this does not fix it, slightly straighten out the bends of the flat bar that connects the handle to the lock mechanism. To do this you have to go inside the door to remove the piece.