Had trouble with my door handles in my '72 super also. Previous owner installed after market handles that were troublesome and one "trigger finger" lever broke. Went to my local bug junkyard bought several (in case they act up) good used VW door handles that weren't pitted, carefully changed the lock mechanisms so I could use my old key. Needed no adjustment, works great for the last 3 years. Also bought some window crank handles. The after marked ones the previous owner installed broke also.
beetledon '72 super