there was a procedure for lowering your top in the factory service manual that will stop/slow down the rip's in that area for early A's (don't have the FSM for the later ones)
here tis
View attachment 1714662670
I know for certain that my first dart convertible was not done that way and did indeed rip in that area, heck I couldn't even get the zipper on the window to move EVER. but after the new top was put on it lasted over 15 years before it got so brittle it disintegrated. that top was Up"n" down and up "n " down so many times I plain wore out the cylinders every 5 years , hey I was a teen to 20ish when I had it:D