Mark,
You have two options;
(A) replace the arms
(B) replace the springs.
I don't know where in the heck you would buy them springs, therefore I
think it's arm time.
Crazy thing how them arms blow off the glass.
Not good if you want to see where your going in a heavy downpour.
Rain-X the heck out of your glass, is another option,I guess.

Later,

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Terry
74 Westy (Clementine)
85 GL