[Ignore this reply - it is so far off base, it hurts. See reply below.]
Almost all of the reproduction parts vendors sell these springs. Our recommendations are worthless because the vendors seem to have a hard time getting a reliable supply of springs that do not break after a few door openings.
They will tell you they now have good springs; when the springs break, they will tell you that they must have gotten a bad batch and they will send you good springs from the next batch (from a new supplier, no doubt).
So, no matter what anyone says, it's a crap shoot.
