Substitutions for vintage hinges
What I remembered of those parts was that force was needed to snap them together, and I believe I also have some that are broken over the years. 

The part was introduced in 1983, updated in 1985 and the last sets were released in 2002 with one set in 2004.

In 2003 the parts are replaced by Hinge Plate 1 x 2 Locking with Dual Finger on End Vertical' (44302) and Hinge Plate 1 x 2 Locking with Single Finger on End Vertical' (44301). These parts have a number of fix angles in which the hinge can be placed. This finger shape is also added to al kind of other parts, like the canopy

There is also a version for non fixed angles Plate, Modified 1 x 2 with Clip Horizontal on End and Plate, Modified 1 x 2 with Handle on End - Closed Ends and these can also be combined with other parts