Oops you are correct about the J vs straight.
The 73 has straight ends and that is what I have, and what the wipers I got fit.
Sorry about that.
I was thinking of a different car.
One thing I have seen before is the springs in the arm got weak over the years and don't hold the blades down good enough.
I have shortened the spring to solve that, but be prepared for a bit of a battle because those springs are tough little devils. :D
A pair of vise grips and a flat tipped screwdriver is almost a must have to hold bend and tweak those springs.
Basically you just cut off the existing loop on one end and bend the next coil up as the new loop.
